ASTM A1039/A1039M-20

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Designation: A1039/A1039M − 19 A1039/A1039M − 20
Standard Specification for
Steel, Sheet, Hot Rolled, Carbon, Commercial, Structural,
and High-Strength Low-Alloy, and Ultra-High Strength,
Produced by Twin-Roll Casting Process
This standard is issued under the fixed designation A1039/A1039M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This specification covers commercial and structural commercial, structural, high-strength low-alloy, and ultra-high strength
steel sheet in coils and cut lengths produced by the twin-roll casting process.
1.2 The steel sheet is available in the designations listed in Section 4.
1.3 The material is available in the following sizes:
Thickness—0.027 in. [0.7 mm] to 0.078 in. [2.0 mm]
Width—up to 79 in. [2000 mm]
Thickness: 0.027 to 0.078 in. [0.7 to 2.0 mm]
Width: up to 79 in. [2000 mm]
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
NOTE 1—A description of the Twin-RollTwin-roll Casting Process is included in Appendix X1.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A568/A568M Specification for Steel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled,
General Requirements for
A606/A606M Specification for Steel, Sheet and Strip, High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, with Improved
Atmospheric Corrosion Resistance
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
G101 Guide for Estimating the Atmospheric Corrosion Resistance of Low-Alloy Steels
3. Terminology
3.1 Definitions—For definitions of other terms used in this specification refer to Terminology A941.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 twin roll twin-roll casting process, n—production of steel sheet directly from liquid metal.
3.2.1.1 Discussion—
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.19
on Steel Sheet and Strip.
Current edition approved Sept. 1, 2019July 1, 2020. Published October 2019July 2020. Originally approved in 2004. Last previous edition approved in 20132019 as
A1039/A1039M – 13.A1039/A1039M – 19. DOI: 10.1520/A1039_A1039M-19.10.1520/A1039_A1039M-20.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. 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, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A1039/A1039M − 20
The properties of the steel sheet are the result of the control of the casting conditions, and in some cases, through a combination
of the casting process and hot rolling of the sheet.
4. Classification
4.1 Twin-roll cast steel sheet is available in the following designations:
4.1.1 Commercial steel (CS Types A, B, and D),
4.1.2 Drawing steel (DS Types A, B, and D),
4.1.3 Structural steel (SS Grades 30 [205], 33 [230], 36 [250] Types 1 and 2, 40 [275], 45 [305], 50 [340], 55 [380], 60 [410],
70 [480], and 80 [550]), and
4.1.4 High-Strength Low-AlloyHigh-strength low-alloy steel (HSLAS, classes 1 and 2 in grades 45 [310], 50 [340], 55 [380],
60 [410], 65 [450], 70 [480][480], and 80 [550].
4.1.5 Ultra-high strength steel (UHSS in grades W 100 [690], W 150 [10304], Mart 190 [1300], Mart 220 [1500], Mart250
[1700].
5. Ordering Information
5.1 It is the purchaser’s responsibility to specify in the purchase order all ordering information necessary to describe the required
material. Examples of such information include, but are not limited to, the following:
5.1.1 ASTM specification number and year of issue,
5.1.2 Name of material and designation (direct cast or hot rolled sheet) (include grade and class, and limits for Cu, Ni, Cr, and
Mo as appropriate, for CS, DS, SS, and HSLAS) HSLAS, and UHSS) (see 4.1),
5.1.2.1 When a type is not specified for CS, Type B will be furnished,
5.1.2.2 When a type is not specified for DS, Type B will be furnished,
5.1.2.3 When a class for HSLAS is not specified, Class 1 will be furnished.
5.1.2.4 When limits for Cu, Ni, Cr, and Mo are not specified, limit H (see Table 1) will be furnished.
5.1.3 Finish (see 9.1),
5.1.4 Type of edge (see 9.3),
5.1.5 Oiled or not oiled, as required (see 9.2),
5.1.6 Dimensions (thickness, width, and whether cut lengths or coils),
5.1.7 Coil size (inside diameter, outside diameter, and maximum weight),
5.1.8 Copper bearing steel, (if required),
5.1.9 Quantity,
5.1.10 Application (part identification and description),
5.1.11 A report of heat analysis will be supplied, if requested, for CS or DS. For materials with required mechanical properties,
SS SS, HSLAS, or HSLAS,UHSS a report is required of heat analysis and mechanical properties as determined by the tension test,
and
5.1.12 Special requirements (if any).
5.1.12.1 When the purchaser requires thickness tolerances for ⁄8 in. [10 mm] minimum edge distance (see Supplementary
Requirement in Specification A568/A568M), this requirement shall be specified in the purchase order or contract.
5.1.12.2 Martensitic grades are typically sold according to tensile strength.
NOTE 2—A typical ordering description is as follows: ASTM A1039/A1039M steel sheet, CS Type A, pickled and oiled, cut edge, 0.075 by 36 by 96
in, 100 000 lb, for part no.No. 6310, for shelf bracket, or
ASTM A1039/A1039M, hot rolled steel sheet, SS Grade 40, pickled and oiled, cut edge, 1.5 by 117 mm by coil, ID 600 mm, OD 1500 mm, max weight
10 000 kg, 100 000 kg, for part number A4885 for lower housing.
6. General Requirements for Delivery
6.1 Material furnished under this specification shall conform to the applicable requirements of the current edition of
Specification A568/A568M for steel sheet.
7. Chemical Composition
7.1 The heat analysis of the steel shall conform to the chemical requirements of the appropriate designation shown in Table 2
for CS, Table 1 for SS and HSLAS, and Table 3 for Cu, Ni, Cr, and Mo.
7.2 Each of the elements listed in Tables 1 and 2 shall be included in the report of the heat analysis. When the amount of copper,
nickel, chromium, or molybdenum is less than 0.02 %, the analysis shall be reported as “<0.02 %” or the actual determined value.
When the amount of vanadium, columbium, or titanium is less than 0.008 %, the analysis shall be reported as “<0.008 %”or the
actual determined value.
7.3 Sheet steel grades defined by this specification are suitable for welding if appropriate welding conditions are selected.
Certain welding processes may require more restrictive composition limits than those included in Table 1 or Table 2, and in these
cases, the restrictive limits shall be reviewed with the producer at the time of inquiry and ordering.
A1039/A1039M − 20
A,B
TABLE 1 Chemical Requirements for Twin Roll Twin-roll Cast Hot Rolled Steel Sheet Designations SS SS, HSLAS, and HSLASUHSS
% Heat Analysis, Element Maximum Unless Otherwise Shown
Designation
C C D
C Mn P S Al Si V CbNb Ti N
D
SS:
E
SS:
Grade 30 [205] 0.25 0.90 0.035 0.04 . . . . . . 0.008 0.008 0.008 . . .
Grade 33 [230] 0.25 0.90 0.035 0.04 . . . . . . 0.008 0.008 0.008 . . .
Grade 36 [250] Type 1 0.25 1.35 0.035 0.04 . . . . . . 0.008 0.008 0.008 . . .
Grade 36 [250] Type 2 0.25 1.35 0.035 0.04 . . . . . . 0.008 0.008 0.008 . . .
Grade 40 [275] 0.25 1.35 0.035 0.04 . . . . . . 0.008 0.008 0.008 . . .
Grade 45 [305] 0.25 1.35 0.035 0.04 . . . . . . 0.008 0.008 0.008 . . .
Grade 50 [345] 0.25 1.35 0.035 0.04 . . . . . . 0.008 0.008 0.008 . . .
Grade 55 [380] 0.25 1.35 0.035 0.04 . . . . . . 0.008 0.008 0.008 . . .
Grade 60 [410] 0.25 1.35 0.035 0.04 . . . . . . 0.008 0.008 0.008 . . .
Grade 70 [480] 0.25 1.35 0.035 0.04 . . . . . . 0.008 0.008 0.008 . . .
Grade 80 [550] 0.25 1.35 0.035 0.04 . . . . . . 0.008 0.008 0.008 . . .
C
HSLAS:
C
HSLAS:
D
Grade 45 [310] Class 1 0.22 1.35 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min . . .
E
Grade 45 [310] Class 1 0.22 1.35 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min . . .
Grade 45 [310] Class 2 0.15 1.35 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min . . .
D
Grade 50 [340] Class 1 0.23 1.35 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min . . .
E
Grade 50 [340] Class 1 0.23 1.35 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min . . .
Grade 50 [340] Class 2 0.15 1.35 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min . . .
D
Grade 55 [380] Class 1 0.25 1.35 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min . . .
E
Grade 55 [380] Class 1 0.25 1.35 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min . . .
Grade 55 [380] Class 2 0.15 1.35 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min . . .
Grade 60 [410] Class 1 0.26 1.50 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min . . .
Grade 60 [410] Class 2 0.15 1.50 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min . . .
E
Grade 65 [450] Class 1 0.26 1.50 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min
F
Grade 65 [450] Class 1 0.26 1.50 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min
E
Grade 65 [450] Class 2 0.15 1.50 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min
F
Grade 65 [450] Class 2 0.15 1.50 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min
E
Grade 70 [480] Class 1 0.26 1.65 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min
F
Grade 70 [480] Class 1 0.26 1.65 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min
E
Grade 70 [480] Class 2 0.15 1.65 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min
F
Grade 70 [480] Class 2 0.15 1.65 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min
E
Grade 80 [550] Class 1 0.26 1.65 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min
F
Grade 80 [550] Class 1 0.26 1.65 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min
E
Grade 80 [550] Class 2 0.15 1.65 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min
F
Grade 80 [550] Class 2 0.15 1.65 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min
E
Grade 100 [690] Class 1 0.26 1.75 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min
F
Grade 100 [690] Class 1 0.26 1.75 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min
E
Grade 100 [690] Class 2 0.15 1.75 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min
F
Grade 100 [690] Class 2 0.15 1.75 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min
UHSS:
F
Grade 100 [690] Class 1 0.26 1.75 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min
F
Grade 100 [690] Class 2 0.15 1.75 0.04 0.04 . . . . . . 0.005 min 0.005 min 0.005 min
G F
W-100 [690] 0.30 1.50 0.05 0.003 . . . . . . 0.005 min 0.005 min 0.005 min
G F
W-150 [10340] 0.30 1.50 0.05 0.003 . . . . . . 0.005 min 0.005 min 0.005 min
F
Mart 190 [1300] 0.25 2.00 0.05 0.003 . . . . . . 0.005 min 0.005 min 0.005 min
F
Mart 220 [1500] 0.28 2.00 0.05 0.003 . . . . . . 0.005 min 0.005 min 0.005 min
F
Mart 250 [1700] 0.30 3.00 0.05 0.003 . . . . . . 0.005 min 0.005 min 0.005 min
A
Where an ellipsis (. . .) appears in the table, there is no requirement but the analysis shall be reported.
B
The limits for copper, nickel, chromium and molybdenum are shown in Table 3.
C
HSLAS steels contain the strengthening elements columbium (niobium), vanadium, titanium, and molybdenum added singly or in combination. The minimum
requirements only apply to the microalloy elements selected for strengthening of the steel.
D
Columbium (Cb) and niobium (Nb) are considered interchangeable names for element 41 in the periodic table and are acceptable for use.
E
For each reduction of 0.01 % below the specified carbon maximum, an increase of 0.06 % manganese above the specified maximum will be permitted up to a maximum
of 1.50 %.
F
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 is permitted as a deliberate addition. Consideration should be made for the use of nitrogen binding elements.
G
Grade W shall have an atmospheric corrosion resistance index of 6.0 or higher calculated from heat analysis in accordance with Guide G101, using the Larabee and
Coburn method of evaluation.
NOTE 3—The twin-roll cast product may be deoxidized using either silicon or aluminum.
8. Mechanical Properties
8.1 CS:
8.1.1 Typical, non-mandatory mechanical properties for CS are found in Table 4.
A1039/A1039M − 20
A
TABLE 2 Chemical Requirements for Twin Roll Twin-roll Cast Hot Rolled Steel Sheet Designations CS and DS
Composition, % Heat Analysis, Element Maximum Unless Otherwise Shown
B C D
C Mn P S Al Si Cu Ni Cr Mo V CbNb Ti N
D
CS Type A 0.10 0.70 0.030 0.035 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.008 . . .
E
CS Type A 0.10 0.70 0.030 0.035 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.008 . . .
CS Type B 0.02–0.15 0.70 0.030 0.035 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.008 . . .
CS Type D 0.15 0.80 0.030 0.035 . . . . . . 0.50 0.30 0.30 0.15 0.008 0.008 0.008 . . .
D
DS Type A 0.10 0.60 0.030 0.035 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.008 . . .
E
DS Type A 0.10 0.60 0.030 0.035 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.008 . . .
DS Type B 0.02–0.15 0.60 0.030 0.035 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.008 . . .
DS Type D 0.15 0.60 0.030 0.035 . . . . . . 0.50 0.30 0.30 0.15 0.008 0.008 0.008 . . .
A
Where an ellipsis ({) (. . .) appears in the table, there is no requirement, but the analysis shall be reported.
B
When aluminum deoxidized steel is required, it may be ordered to a minimum of 0.01 % total aluminum.
C
When copper steel is specified, the copper limit is a minimum of 0.20 %.
D
Columbium (Cb) and niobium (Nb) are considered interchangeable names for element 41 in the periodic table and are acceptable for use.
E
Specify Type B to avoid carbon levels below 0.02 %.
TABLE 3 Chemical Requirements: Cu, Ni, Cr, and Mo for
Structural Steels and High-Strength Low-AlloySteels, High-
strength Low-alloy Steels, and Ultra-high Strength Steels
% Heat Analysis, maximum Unless Otherwise Specified
A,B B B,C B,C
Designation Limits Cu Ni Cr Mo
SS:
SS:
All grades L 0.35 0.20 0.15 0.06
H 0.50 0.30 0.30 0.16
HSLAS:
HSLAS:
All grades & classes L 0.35 0.20 0.15 0.06
All grades and classes L 0.35 0.20 0.15 0.06
and UHSS Grade 100
H 0.50 0.30 0.30 0.16
UHSS
Grade W (100 and L 0.35 0.20 0.15 0.08
150)
H 0.50 0.30 0.30 0.16
Grade Mart L 0.35 0.20 0.15 0.08
(190 [1300], 220 [1500]
and 250 [1700])
H 0.50 0.30 0.30 0.16
A
When copper is specified, a minimum of 0.20 % is required. When copper steel
is not specified, the copper limit is a maximum requirement.
B
For limit H 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 limit H 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.
8.1.2 The material shall be capable of being bent at room temperature in any direction through 180° flat on itself without
cracking on the outside of the bent portion (see section on bend test of Test Methods and Definitions A370).
8.2 SS SS, HSLAS, and HSLAS:UHSS:
8.2.1 The available grades and corresponding mechanical property requirements for SS SS, HLAS, and HSLASUHSS steels are
shown in Table 5.
8.2.2 Tension Tests:
8.2.2.1 Requirements—Material as represented by the test specimen shall conform to the mechanical property requirements
specified in Table 5.
A1039/A1039M − 20
A
TABLE 4 Typical Ranges of Mechanical Properties
B
(Nonmandatory) for Twin Roll Twin-roll Cast Hot Rolled Steel
Sheet Designations CS and DS
Yield Strength
Elongation in
Designation
C
2 in. [50 mm] %
ksi MPa
DS Types A and B 35 to 45 [240 to 310] 26
DS Type D 35 to 55 [240 to 380] 24
CS Types A and B 35 to 50 [240 to 340] 22
CS Type D 35 to 60 [240 to 410] 20
A
The yield strength tends to increase and the elongation tends to decrease as the
sheet thickness decreases. These properties represent those typical of material in
the thickness range of 0.050 in. [1.27 mm] to 0.065 in. [1.65 [1.27 to 1.65 mm].
B
The typical mechanical property values presented here are non
mandatory.non-mandatory.
C
Yield strength and elongation are measured in the longitudinal direction in
accordance with Test Methods and Definitions A370.
8.2.2.2 Number of Tests—Two tension tests shall be made from each heat or from each 50 tons [45 000 kg]. When the amount
of finished material from a heat is less than 50 tons [
...