Designation:A1018/A1018M–05b
Standard Specification for
Steel,Sheet and Strip,Heavy-Thickness Coils,Hot-Rolled,
Carbon,Commercial,Drawing,Structural,High-Strength郑成功教学
设计 Low-Alloy,and High-Strength Low-Alloy with Improved
Formability1
This standard is issued under thefixed designation A1018/A1018M;the number immediately following the designation indicates the
year of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last
reapproval.A superscript epsilon(e)indicates an editorial change since the last revision or reapproval.
1.Scope*
1.1This specification covers hot-rolled,heavy-thickness
coils beyond the size limits of Specification A1011/A1011M.
1.2The product is available infive designations:Commer-
cial Steel,Drawing Steel,Structural Steel,High-Strength
Low-Alloy Steel,and High-Strength Low-Alloy Steel with
Improved Formability.
1.3This material is available only in coils described as
follows:
Product Size Limits,Coils Only
Width,in.[mm]Thickness,in.[mm]
Strip Over8to12,incl
[Over200to300]0.230to1.000,incl [Over6.0to25]
Sheet Over12to48,incl
[Over300to1200]0.230to1.000,incl [Over6.0to25]
Sheet Over48
[Over1200]0.180to1.000,incl [Over4.5to25]
1.4Sheet and strip in coils of sizes noted in1.3are covered by this specification only with the following provisions:
1.4.1The material is to be fed directly from coils into a blanking press,drawing or forming operation,tube mill,rolling mill,or sheared or slit into blanks for subsequent drawing or forming.
1.4.2The material is not to be converted into steel plates for structural or pressure vessel use unless tested in complete accordance with the appropriate sections of Specifications A6/A6M(plates provided from coils)or A20/A20M(plates produced from coils).Plate converted from coils is no longer governed by this sheet steel specification and since this material is now a plate,the requirements of the appropriate plate specification shall apply,except in cases where there is a conflict between the requirements of the plate specification and this specification.In these cases,the more restrictive limits of either specification shall apply.
1.4.3The dimensional tolerances of Specification A635/ A635M are applicable to material produced to this specifica-tion.
1.4.4Not all strength levels are available in all thicknesses. The user should consult the producer for appropriate size limitations.
1.5The values stated in either inch-pound units or SI units [metric]are to be regarded separately as standard.Within the text the SI units are shown in brackets.The values stated in each system are not exact equivalents;therefore,each system must be used independently of the other.
2.Referenced Documents
2.1ASTM Standards:2
A6/A6M Specification for General Requirements for Rolled Structural Steel Bars,Plates,Shapes,and Sheet Piling
A20/A20M Specification for General Requirements for Steel Plates for Pressure Vessels
A370Test Methods and Definitions for Mechanical Testing of Steel Products
A572/A572M Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel
A635/A635M Specification for Steel,Sheet and Strip, Heavy-Thickness Coils,Hot-Rolled,Carbon,Structural, High-Strength Low-Alloy,and High-Strength Low-Alloy with Improved Formability,General Requirements for
A751Test Methods,Practices,and Terminology for Chemical Analysis of Steel Products
三辊轧管机A1011/A1011M Specification for Steel,Sheet and Strip, Hot-Rolled,Carbon,Structural,High-Strength Low-Alloy and High-Strength Low-Alloy with Improved Formability E29Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
G101Guide for Estimating the Atmospheric Corrosion Resistance of Low-Alloy Steels
1This specification is under the jurisdiction of ASTM Committee A01on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.19on Steel Sheet and Strip.
Current edition approved Dec.1,2005.Published December2005.Originally approved in2001.Last previous edition approved in2005as A1018/ A1018M–05a.
2For referenced ASTM standards,visit the ASTM website,,or contact ASTM Customer Service at For Annual Book of ASTM Standards volume information,refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard. Copyright©ASTM International,100Barr Harbor Drive,PO Box C700,West Conshohocken,PA19428-2959,United States.
3.General Requirements for Delivery
3.1Material furnished under this specification shall con-form to the applicable requirements of the current edition of Specification A 635/A 635M ,unless otherwise provided herein.
4.Classification
4.1Heavy thickness coils are available in the following designations:
4.1.1Commercial Steel (CS)4.1.2Drawing Steel (DS)
4.1.3Structural Steel —(SS grades 30[205],33[230],36[250]Types 1and 2,and 40[275]).
4.1.4High-Strength Low-Alloy Steel —(HSLAS grades 45[310],50[340],55[380],60[410],65[450],70[480])in Classes 1and 2.
4.1.4.1This material is intended for miscellaneous applica-tions where greater strength and savings in weight are impor-tant.The material is available in two classes.They are similar in strength level,except that Class 2offers improved weldabil-ity and more formability than Class 1.Atmospheric corrosion resistance of these steels is equivalent to plain carbon steels.With copper specified,the atmospheric corrosion is somewhat enhanced.
4.1.5High-Strength Low-Alloy Steel with Improved Formability —(HSLAS-F grades 50[340],60[410],70[480],80[550]).
4.1.
5.1This material has improved formability when com-pared with HSLAS.The steel is killed and made to a fine ferritic grain practice and includes microalloying elements such as columbium,titanium,vanadium,zirconium,etc.The steel shall be treated to achieve inclusion control.The material is intended for miscellaneous applications where higher strength,savings in weight,improved formability,and weld-ability are important.Atmospheric corrosion resistance of these steels is equivalent to plain carbon steels.With copper speci-fied,the atmospheric corrosion resistance is somewhat en-hanced.
N OTE 1—For methods of establishing the atmospheric corrosion resis-tance of low-alloy steels,see Guide G 101.
4.1.6When required for HSLAS and HSLAS-F steels,limitations on the use of one or more of the microalloy elements shall be specified on the order.
4.2The limits for copper,chromium,nickel,and molybde-num are available in two levels,Limits A and Limits B (see Table 1).
5.Ordering Information
5.1Orders for material under this specification shall include the following information,as required,to describe adequately the desired material.
5.1.1ASTM specification number and year of issue.
5.1.2Name of material and designation (hot-rolled steel sheet or hot-rolled strip)(include grade and,as appropriate,type and class for CS,DS,SS,HSLAS,and HSLAS-F)(see section 4.1).
5.1.2.1For HSLAS,when a class is not specified class 1will be furnished)(see section 4.1),5.1.3Copper bearing,(if required),
5.1.4For SS,HSLAS,and HSLAS-F and selected CS steels,specify the limits for chemical requirements listed in Table 1(elements Cu,Cr,Ni,and Mo).When Limits A or Limits B are not specified,Limits A shall be furnished.
5.1.5Condition —Material in accordance with this specifi-cation is furnished in the hot rolled condition.Pickled (or blast cleaned)must be specified if required.Material ordered as pickled (or blast cleaned)will be oiled unless ordered dry,
TABLE 1Chemical Requirements:Cu,Ni,Cr and Mo for Commercial Steels,Structural Steels,High-Strength Low-Alloy Steels,and
High-Strength Low-Alloy Steels with Improved Formability
%Heat Analysis,Element Maximum Unless Otherwise Shown
Designation
Limits Cu A ,B Ni B Cr B ,C Mo B ,C CS:
A 0.200.200.150.06Grades 1015,1016,1017,1018,1019,1020,1021,1022,1023,1524B
0.40
0.40
0.30
0.12
SS:
All grades
A 0.200.200.150.06
B 0.400.400.300.12HSLAS:
All grades and classes A 0.200.200.150.06except for Grade 70[480]
B 0.400.400.300.12Grade 70[480]Class 1and Class 2A 0.200.200.150.16B 0.400.400.300.16HSLAS-F:
Grades 50[340]and 60[410]A 0.200.200.150.06B 0.400.400.300.12Grade 70[480]and 80[550]
A 0.200.200.150.16B
0.40
0.40
0.30
0.16
A
When copper bearing steel is specified,the minimum limit for copper is 0.20%.When copper bearing steel is not specified,the maximum limit for copper is as shown in the table.B
For Limits B steels,the sum of copper,nickel,chromium and molybdenum shall not exceed 1.00%on heat analysis.When one or more of these elements are specified by the purchaser,the sum does not apply;in which case,only the individual limits on the remaining elements shall apply.C
For Limits B steels,the sum of chromium and molybdenum shall not exceed 0.32%on heat analysis.When one or more of these elements are specified,the sum does not apply;in which case,only the individual limits on the remaining elements shall
apply.
5.1.6Type of edge must be specified for hot rolled sheet coils and strip coils,either mill edge or cut edge (sheet),mill edge or slit edge (strip),
5.1.7Dimensions (decimal thickness and width of material),5.1.7.1As agreed upon between the purchaser and the producer,material ordered to this specification will be supplied to meet the appropriate standard or restricted thickness toler-ances shown in Specification A 635/A 635M ,
N OTE 2—Not all producers are capable of meeting all the limitations of the thickness tolerance tables in Specification A 635/A 635M .The pur-chaser should contact the producer regarding possible limitations prior to placing an order.
5.1.8Coils size and weight requirements (must include inside diameter (ID),outside diameter (OD),and maximum weight,
5.1.9Quantity (weight),
5.1.10Application (part identification and description).Or-ders for conversion to plate shall include reference to the applicable ASTM plate specification.
5.1.11Special requirements,if required,and
5.1.11.1If required,a limit on “carbon equivalent”may be specified (see Supplementary Requirement S1).
5.1.12A report is required of heat analysis and mechanical properties as determined by the tension test.
N OTE 3—A typical ordering description is as follows:(inch pound units)ASTM A 1018/A 1018M:Grade 50,High-Strength,Low-Alloy Steel,Class 2,Limits B,hot rolled sheet coils,pickled and oiled,cut edge,0.500by 40in.by coil;ID 24in.,OD 72in.,maximum;coil weight 40000lb.,maximum;200000lb.for roll forming shapes;(SI units)ASTM A 1018/A 1018M:Grade 340,High-Strength Low-Alloy Steel,Class 2,Limits B,hot-rolled sheet coils,pickled and oiled,cut edge;10mm by 900mm by coil;ID 600mm,OD 1800mm,maximum;coil weight 18000kg maximum;90000kg for roll forming shapes.For conversion to plate:(inch-pound units)ASTM A 1018/A 1018M:Grade 50,High-Strength Low-Alloy Steel,Class 1,Limits A,hot-rolled sheet coils,as rolled,mill
edge,0.500in.by 50in.by coil,ID 24in.,OD 72in.,maximum;coil weight 40000lb.,maximum;200000lb.for conversion to plate,Specification A 572/A 572M Grade 50;(SI units)ASTM A 1018/A 1018M:Grade 340,Structural Steel,hot-rolled sheet coils,as rolled,
mill edge;10mm by 1000mm by coil;ID 600mm,OD 1800mm,maximum;coil weight 18000kg maximum;100000kg for conversion to plate,Specification A 572/A 572M Grade 340.
6.Chemical Composition
6.1The heat analysis of commercial steel and drawing steel shall conform to the requirements of Table 2.
6.1.1The heat analysis of structural steel,high-strength low-alloy steel,and high-strength low-alloy steel with im-proved formability shall conform to the requirements of Tables 1-3.Table 1describes the heat analysis requirements for two sets of limits for the elements copper,chromium,nickel,and molybdenum.The required limits of these elements shall be specified on the order.
N OTE 4—Table 1does not apply to drawing steels and some commer-cial steels (see Table 2).
6.1.2Chemical analysis shall be conducted in accordance with Test Methods,Practices,and Terminol
ogy A 751.
6.1.3Each of the elements listed in Tables 2and 3shall be included in the report of the heat analysis.When the amount of copper,nickel,chromium,or molybdenum is less than 0.02%,report the analysis as <0.02%or the actual value.When the amount of columbium,titanium,or vanadium is less than 0.008%,report the analysis as <0.008%or the actual deter-mined value.
6.1.4For Structural Steel (SS)the addition of microalloying elements,including columbium,vanadium,or titanium,as well as nitrogen,as strength enhancers is prohibited.
6.1.5Sheet steel grades defined by this specification are suitable for welding if appropriate welding conditions are selected.For certain welding processes,more restrictive com-position limits may be desirable and should be requested at the time of inquiry and ordering.
7.Mechanical Properties
7.1Test specimen preparation and mechanical testing shall be in accordance with Test Methods and Definitions A 370.
TABLE 2Chemical Requirements A Commercial and Drawing Steels
%Heat Analysis,Element Maximum Unless Otherwise Shown
Designation
Commercial Steel (CS)C Mn P S Cu Ni Cr Mo V Cb Ti B N B 10060.080.450.0300.0350.20C
0.200.150.060.0080.10080.100.500.0300.0350.20C 0.200.150.060.0080.10090.150.600.0300.0350.20C 0.200.150.060.0080.10100.08to 0.130.30to 0.600.0300.0350.20C 0.200.150.060.0080.10120.10to 0.150.30to 0.600.0300.0350.20C
0.20
0.15
0.06
0.0080.10150.13to 0.180.30to 0.600.0300.035See Table 1for limits of copper,chromium,nickel,and molybdenum
0.0080.10160.13to 0.180.60to 0.900.0300.0350.0080.10170.15to 0.200.30to 0.600.0300.0350.0080.10180.15to 0.200.60to 0.900.0300.0350.0080.10190.15to 0.200.70to 1.000.0300.0350.0080.10200.18to 0.230.30to 0.600.0300.0350.0080.10210.18to 0.230.60to 0.900.0300.0350.0080.10220.18to 0.230.70to 1.000.0300.0350.0080.10230.20to 0.250.30to 0.600.0300.0350.0080.0080.025 (1524)
1.35to 1.65
0.0300.0350.0080.Drawing Steel (DS)
0.10
0.50
0.030
0.020
伞齿轮0.20C 0.200.150.06
0.008
0.008
0.025
...
...
A Where an ellipsis (...)appears in the table,there is no requirement,but the analysis shall be reported.
B
Titanium is permitted to 0.025%,at the producer’s option,provided the ratio of %titanium to %nitrogen does not exceed 3.4.C
When copper steel is specified,the copper limit is a minimum requirement.When copper steel is not s
我的校长生涯pecified,the copper limit is a maximum requirement.
7.2Tensile Properties —The material,structural steel,high-strength low-alloy steel,and high-strength low-alloy steel with improved formability,as represented by the test specimens shall conform to the mechanical property requirements as stated in Table 4.These requirements do not apply to the uncropped ends of unprocessed coils.
7.3Tension Test Specimen Location and Orientation —Tension test specimens shall be taken sufficiently far from the as hot-rolled coil ends so that the sample is representative of material which received the designed processing.The test shall be taken approximately midway between the center and edge of the material as rolled.For coils wider than 24in.[600mm],Tension test specimens shall be taken such that the longitudinal axis of the specimens is perpendicular to the direction of rolling (transverse test).For coils through 24in.[600mm]in width,tension test specimens shall be taken such that longitu-dinal axis of the specimen is parallel to the direction of rolling (longitudinal test).
7.4Tension Tests —Two tension tests shall be conducted from each heat or each of 50tons [45Mg].When the amount of finished material from a heat is less than 50tons [45Mg],only one tensio
n test shall be conducted.When material rolled from one heat differs 0.050in.[1.3mm]or more in thickness,one tension test shall be conducted from both the thickest and the thinnest material rolled regardless of the weight repre-sented.
7.5To determine conformance with this specification,a test value should be rounded to the nearest 1ksi [7Mpa]of tensile strength and yield point,and to the nearest unit in the right-hand place of figures used in expressing the limiting value for other places in accordance with the rounding off methods given in Practice E 29.
7.6Structural steel,high-strength low-alloy steel,and high-strength low-alloy steel with improved formability covered by this specification are commonly fabricated by cold bending.There are many interrelated factors that affect the ability of a given steel to cold form over a given radius under shop conditions.These factors include thickness,strength level,degree of restraint,relationship to rolling direction,chemistry,and microstructure.The producer shall be consulted concern-ing the recommended minimum inside radius and bending direction.Where possible,a larger radius or “easy way”bending (with the bend axis perpendicular to rolling direction),or both,are recommended for improved performance.
7.7Fabricators must be aware that cracks may initiate upon bending a sheared or burned edge.This is not considered a fault of the steel,but is rather a function of the induced cold work or heat affected zone.
8.Workmanship,Finish,and Appearance
8.1Edges —The normal edge condition in heavy-thickness coils is mill edge.If cut edge is required,it must be specified.
TABLE 3Chemical Requirements A
Structural Steels,High-Strength Low-Alloy Steels,and High-Strength Low-Alloy Steels with Improved Formability
%Heat Analysis,Element Maximum Unless Otherwise Shown
Designation
C Mn P S Al Si V Cb Ti N
SS
B
Grade 30[205]0.25 1.500.0.0080.0080.0250.014Grade 33[230]
0.25 1.500.0.0080.0080.0250.014Grade 36[250]Type 10.25 1.500.0.0080.0080.0250.014Grade 36[250]Type 20.25 1.50C 0.0.0080.0080.0250.014Grade
40
[275]0.25 1.500.0.0080.0080.0250.014
HSLAS D
Grade 45[310]Class 10.22 1.500.0.005min 0.005min 0.005min ...
Grade 45[310]Class 20.15 1.500.0.005min 0.005min 0.005min E
Grade 50[340]Class 10.23 1.500.0.005min 0.005min 0.005min ...
Grade 50[340]Class 20.15 1.500.0.005min 0.005min 0.005min E
Grade 55[380]Class 10.25 1.500.0.005min 0.005min 0.005min ...
Grade 55[380]Class 20.15 1.500.0.005min 0.005min 0.005min E
Grade 60[410]Class 10.26 1.500.0.005min 0.005min 0.005min ...
Grade 60[410]Class 20.15 1.500.0.005min 0.005min 0.005min E Grade 65[450]Class 10.26 1.500.0.005min 0.005min 0.005min E Grade 65[450]Class 20.15 1.500.0.005min 0.005min 0.005min E Grade 70[480]Class 10.26 1.650.0.005min 0.005min 0.005min E Grade
70[480]
Class
2
0.15
1.65
0.04
0.04
...
...
0.005
min
0.005
min
0.005
min
E
HSLAS-F D
Grade 50[340]0.15 1.650.0.005min 0.005min 0.005min E Grade 60[410]0.15 1.650.0.005min 0.005min 0.005min E Grade 70[480]0.15 1.650.0.005min 0.005min 0.005min E Grade
80[550]0.15 1.650.0.005min 0.005min 0.005min
E
A An ellipsis (...)indicates that no limits have been set for that element.See Table 1for requirements for Cu,Ni,Cr,and Mo.
B
Titanium is permitted for SS designations,at the producer’s option,to 0.025%maximum,provided the ratio of %titanium to %nitrogen does not exceed 3.4.C
For product greater than 0.75in.in thickness,the manganese requirement is 0.80to 1.20%.D
HSLAS and HSLAS-F steels contain the strengthening elements columbium,vanadium,and titanium added singly or in combination.The minimum requirements only apply to the microalloy elements selected for strengthening of the steel.E
The purchaser has the option of restricting the nitrogen content.It should be noted that,depending on the microalloying scheme (for example,use of vanadium)of the producer,nitrogen may be a deliberate addition.Consideration should be made for the use of nitrogen binding elements (for example,vanadium,
titanium).
8.2Oiling —Unless otherwise specified,hot-rolled as-rolled material shall be furnished dry,and hot rolled pickled or blast cleaned material shall be furnished oiled.When required,it is permissible to specify pickled or blast cleaned material be furnished dry,or that as-rolled material be furnished oiled.8.3Surface Finish —Unless otherwise specified,hot-rolled material shall have an as-rolled,not pickled surface finish.When required,material shall be specified to be pickled or blast-cleaned.
9.Retests and Disposition of Non-Conforming Material 9.1Retests,conducted in accordance with the requirements of Section 10.1of Specification A 635/A 635M ,are permitted when an unsatisfactory test result is suspected to be the consequence of the test method procedure.
9.2Disposition of non-conforming material shall be subject to the requirements of Section 10.2of Specification A 635/A 635M .
10.Certification
10.1A report of heat analysis shall be supplied,if requested,for CS and DS steels.For material with required mechanical properties,SS,HSLAS,and HSLAS-F,a report is required of heat analysis and mechanical properties as determined by the tension test.11.Keywords
11.1carbon steel sheet;carbon steel strip;commercial steel;drawing steel;heavy-thickness coils;high-strength low-alloy steel;hot-rolled steel sheet;hot-rolled steel strip;im-proved formability;steel sheet;steel strip;structural applications
TABLE 4Mechanical Property Requirements A For Hot Rolled Heavy Thickness Coils
Designations SS,HSLAS,and HSLAS-F
Designation
Yield Strength
min ksi [MPa]
Tensile Strength
min B ksi [MPa]
Elongation in 2in.[50mm],min,%for thicknesses to
霜叶红于二月花是什么植物1in.[25mm]incl.
Elongation in 8in.[200mm],min,%for thicknesses 0.180in.[4.5mm]to 1in.[25mm]incl.
SS
Grade 30[205]30[205]49[340]2217Grade 33[230]
33[230]52[360]2216Grade 36[250]Type 136[250]53[365]
2115Grade 36[250]Type 236[250]58to 80[400to 550]
2118Grade
40
[275]
40[275]
55[380]
19
14
HSLAS
Grade 45[310]Class 145[310]60[410]2217Grade 45[310]Class 245[310]55[380]2217Grade 50[340]Class 150[340]65[450]2016Grade 50[340]Class 250[340]60[410]2016Grade 55[380]Class 155[380]70[480]1815Grade 55[380]Class 255[380]65[450]1815Grade 60[410]Class 160[410]75[520]
1614Grade 60[410]Class 260[410]70[480]1614Grade 65[450]Class 165[450]80[550]1412Grade 65[450]Class 265[450]75[520]1412Grade 70[480]Class 170[480]85[590]1210Grade
70[480]
Class
2
70[480]
80[550]
12
10
HSLAS-F
Grade 50[340]50[340]60[410]2216Grade 60[410]60[410]70[480]1614Grade 70[480]70[480]80[550]1210Grade
80[550]80[550]90[620]1210
A For coil products,testing by the producer is limited to the end of the coil.Mechanical properties throughout the coil shall comply with the minimum values specified.B
A minimum and maximum tensile strength are specified for SS Grade 36Type
2.
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