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ASTM A36 Mild Steel
ASTM A36 Standard Specification for Carbon Structural Steel covers carbon structural steel shapes, plates, and bars of structural quality for use in riveted, bolted, or welded construction of bridges and buildings, and for general structural purposes. Heat analysis shall be used to determine the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, and copper. Tensile strength, yield strength, and elongation shall be evaluated using tension test and must conform to the required tensile properties.
This specification covers carbon steel shapes, plates, and bars of structural quality for use in riveted, bolted, or welded construction of bridges and buildings, and for general structural purposes. Supplementary requirements are provided for use where additional testing or additional restrictions are required by the purchaser. Such requirements apply only when specified in the purchase order.
When the steel is to be welded, a welding procedure suitable for the grade of steel and intended use or service is to be utilized. See Appendix X3 of Specification A 6/A 6M for information on weldability.
The values stated in either inch-pound units or SI units 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 is to be used independently of the other, without combining values in any way. The text of this specification contains notes or footnotes, or both, that provide explanatory material. Such notes and footnotes, excluding those in tables and figures, do not contain any mandatory requirements.
For structural products produced from coil and furnished without heat treatment or with stress relieving only, the additional requirements, including additional testing requirements and the reporting of additional test results, of A 6/A 6M apply.
ASTM A36 steel is the most commonly available of the hot-rolled steels. It is generally available in round rod, square bar, rectangle bar, as well as steel shapes such as I-Beams, H-beams, angles, and channels. The hot roll process means that the surface on this steel will be somewhat rough. Note that its yield strength is also significantly less than 1018 - this means that it will bend much more quickly than will 1018. Finally, machining this material is noticeably more difficult than 1018 steel, but the cost is usually significantly lower.
ASTM A36 Mild (low-carbon) steel |
Minimum Properties |
Ultimate Tensile Strength, psi |
58,000 - 79,800 |
Yield Strength, psi |
36,300 |
Elongation |
20.0% |
Chemistry |
Iron (Fe) |
99% |
Carbon (C) |
0.26% |
Manganese (Mn) |
0.75% |
Copper (Cu) |
0.2% |
Phosphorus (P) |
0.04% max |
Sulfur (S) |
0.05% max |
1008 | 1010 | 1015 | 1018 | 1020 | 1025 | 1035 | 1040 | 1045 | 1050 | 1117 | 1141 | 1144 | 12L14 | 1215 | 4140 | 4150 | 4340 | 8620 | A36 | A653 | A513 | Mechanical Properties | Physical Properties | Carbon Steel Pipe Standards | ASTM A53 B Working Pressure | ASTM A106 B Pressure Temperature Rating | Carbon Steel | Steel Alloy Designations | Chemical Composition Analysis of Carbon Steel Table | UNS Number G1 | UNS Number G2 | UNS Number G3 | UNS Number G4 | UNS Number G5 | UNS Number G6 | UNS Number G7
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Italy |
Belgium |
Swed |
Spain |
Japan |
USA |
Material No. |
DIN |
GB |
BS |
EN |
AFNOR |
UNI |
NBN |
SS |
UNE |
JIS |
AISI |
1.0401 |
C15 |
15 |
080M15 |
- |
CC12 |
C15C16 |
- |
1350 |
F.111 |
- |
1015 |
1.0402 |
C22 |
20 |
050A20 |
2C |
CC20 |
C20C21 |
C25-1 |
1450 |
F.112 |
- |
1020 |
1.0501 |
C35 |
35 |
060A35 |
- |
CC35 |
C35 |
C35-1 |
1550 |
F.113 |
- |
1035 |
1.0503 |
C45 |
45 |
080M40 |
- |
CC45 |
C45 |
C45-1 |
1650 |
F.114 |
- |
1045 |
1.0535 |
C55 |
55 |
070M55 |
- |
- |
C55 |
C55-1 |
1655 |
- |
- |
1055 |
1.0601 |
C60 |
60 |
080A62 |
43D |
CC55 |
C60 |
C60-1 |
- |
- |
- |
1060 |
1.7015 |
9SMn28 |
Y15 |
230M07 |
- |
S250 |
CF9SMn28 |
- |
1912 |
11SMn28 |
SUM22 |
1213 |
1.0718 |
9SMnPb28 |
- |
- |
- |
S250Pb |
CF9MnPb28 |
- |
1914 |
11SMnPb28 |
SUM22L |
12L13 |
1.0722 |
10SPb20 |
- |
- |
- |
10PbF2 |
CF10Pb20 |
- |
- |
10SPb20 |
- |
- |
1.0726 |
35S20 |
- |
212M36 |
8M |
35MF4 |
- |
- |
1957 |
F210G |
- |
1140 |
1.0736 |
9SMn36 |
Y13 |
240M07 |
1B |
S300 |
CF9SMn36 |
- |
- |
12SMn35 |
- |
1215 |
1.0737 |
9SMnPb36 |
- |
- |
- |
S300Pb |
CF9SMnPb36 |
- |
1926 |
12SMnP35 |
- |
12L14 |
1.0904 |
55Si9 |
55Si2Mn |
250A53 |
45 |
55S7 |
55Si8 |
55Si7 |
2085 |
56Si7 |
- |
9255 |
1.0961 |
60SiCr7 |
- |
- |
- |
60SC7 |
60SiCr8 |
60SiCr8 |
- |
60SiCr8 |
- |
9262 |
1.1141 |
Ck15 |
15 |
080M15 |
32C |
XC12 |
C16 |
C16-2 |
1370 |
C15K |
S15C |
1015 |
1.1157 |
40Mn4 |
40Mn |
150M36 |
15 |
35M5 |
- |
- |
- |
- |
- |
1039 |
1.1158 |
Ck25 |
25 |
- |
- |
- |
- |
C25-2 |
- |
- |
S25C |
1025 |
1.1167 |
36Mn5 |
35Mn2 |
- |
- |
40Mn5 |
- |
- |
2120 |
36Mn5 |
SMn438 |
1335 |
1.1170 |
28Mn6 |
30Mn |
150M28 |
14A |
20M5 |
C28Mn |
28Mn6 |
- |
- |
SCMn1 |
1330 |
1.1183 |
Cf35 |
35Mn |
060A35 |
- |
XS38TS |
C36 |
C36 |
1572 |
- |
S35C |
1035 |
1.1191 |
45 |
Ck45 |
080M46 |
- |
XC42 |
C45 |
C45-2 |
1672 |
C45K |
S45C |
1045 |
1.1203 |
Ck55 |
55 |
070M55 |
- |
XC45 |
C50 |
C55-2 |
- |
C55K |
S55C |
1055 |
1.1213 |
Cf53 |
50 |
060A52 |
- |
XC48TS |
C53 |
C53 |
1674 |
- |
S50C |
1050 |
1.1221 |
Ck60 |
60Mn |
080A62 |
43D |
XC60 |
C60 |
C60-2 |
1678 |
- |
S58C |
1060 |
1.1274 |
Ck101 |
- |
060A96 |
- |
- |
- |
- |
1870 |
- |
SUP4 |
1095 |
1.3401 |
X120Mn12 |
- |
Z120M12 |
- |
X120M12 |
XG120Mn12 |
- |
- |
X120Mn12 |
SCMn
H/1 |
- |
1.3505 |
100Cr6 |
Gr15
45Gr |
534A99 |
31 |
100C6 |
100Cr6 |
- |
2258 |
F.131 |
SUJ2 |
52100 |
1.5415 |
15Mo3 |
- |
1501-240 |
- |
15D3 |
16Mo3KW |
16Mo3 |
2912 |
16Mo3 |
- |
ASTM A20Gr.A |
Structural Steel Comparison Table 2 |
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China |
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France |
Italy |
Belgium |
Swe |
Spain |
Material No. |
DIN |
GB |
BS |
EN |
AFNOR |
UNI |
NBN |
SS |
UNE |
1.5426 |
16Mo5 |
- |
1503-245-420 |
- |
- |
16Mo5 |
16Mo5 |
- |
16Mo5 |
1.5622 |
14Ni6 |
- |
- |
- |
16N6 |
14Ni6 |
18Ni6 |
- |
15Ni6 |
1.5662 |
X8Ni9 |
- |
1501-509;510 |
- |
- |
X10Ni9 |
10Ni36 |
- |
XBNi09 |
1.5680 |
12Ni19 |
- |
- |
- |
Z18N5 |
- |
12Ni20 |
- |
- |
1.5710 |
36NiCr6 |
- |
640A35 |
111A |
35NC6 |
- |
- |
- |
- |
1.5732 |
14NiCr10 |
- |
- |
- |
14NC11 |
16NiCr11 |
- |
- |
15NiCr11 |
1.5752 |
14NiCr14 |
- |
655M13;655A12 |
36A |
12NC15 |
- |
13NiCr12 |
- |
- |
1.6511 |
36CrNiMo4 |
- |
816M40 |
110 |
40NCD3 |
38CrNiMo4 |
- |
- |
35CrNiMo4 |
1.6523 |
21NiCrMo2 |
- |
850M20 |
362 |
20NCD2 |
20NiCrMo2 |
- |
2503 |
20NiCrMo2 |
1.6546 |
40NiCrMo2 |
- |
311-Type7 |
- |
- |
40NiCrMo2 |
40NiCrMo2 |
- |
40NiCrMo2 |
1.6582 |
34CrNiMo6 |
40CrNiMoA |
817M40 |
24 |
35NCD6 |
35CrNiMo6 |
35CrNiMo6 |
2541 |
- |
1.6587 |
17CrNiMo6 |
- |
820A16 |
- |
18NCD6 |
- |
17CrNiMo7 |
- |
14CrNiMo13 |
1.7015 |
15Cr3 |
15Cr |
523M15 |
- |
12C3 |
- |
15Cr2 |
- |
- |
1.7033 |
34Cr4 |
35Cr |
530A32 |
18B |
32C4 |
34Cr4(KB) |
34Cr4 |
- |
35Cr4 |
1.7035 |
41Cr4 |
40Cr |
530M40 |
18 |
42C4 |
41Cr4 |
42Cr4 |
- |
42Cr4 |
1.7045 |
42Cr4 |
40Cr |
- |
- |
- |
- |
- |
2245 |
42Cr4 |
1.7131 |
16MnCr15 |
18CrMn |
(527M20) |
- |
16MC5 |
16MnCr15 |
16MnCr15 |
2511 |
16MnCr15 |
1.7176 |
55Cr3 |
20CrMn |
527A60 |
48 |
55C3 |
- |
55Cr3 |
- |
- |
1.7218 |
25CrMo4 |
30CrMn |
1717CDS110 |
- |
25CD4 |
25CrMo4 |
25CrMo4 |
2225 |
55Cr3 |
1.7220 |
34CrMo4 |
35CrMo |
708A37 |
19B |
35CD4 |
35CrMo4 |
34CrMo4 |
2234 |
34CrMo4 |
1.7223 |
41CrMo4 |
40CrMoA |
708M40 |
19A |
42CD4TS |
41CrMo4 |
41CrMo4 |
2244 |
41CrMo4 |
1.7225 |
42CrMo4 |
42CrMo;
42CrMnMo |
708M40 |
19A |
42CD4 |
42CrMo4 |
42CrMo4 |
2244 |
42CrMo4 |
1.7262 |
15CrMo5 |
- |
- |
- |
12CD4 |
- |
- |
2216 |
12CrMo4 |
1.7335 |
13CrMo44 |
- |
1501-620Gr.27 |
- |
15CD3.5;
15CD4.5 |
14CrMo44 |
14CrMo45 |
- |
14CrMo45 |
1.7361 |
32CrMo12 |
- |
722M24 |
40B |
30CD12 |
32CrMo12 |
32CrMo12 |
2240 |
F.124.A |
1.7380 |
10CrMo910 |
- |
1501-622Gr.31;45 |
- |
12CD9;10 |
12CrMo9,10 |
- |
2218 |
TU.H |
1.7715 |
14MoV63 |
- |
1503-660-440 |
- |
- |
- |
13MoCrV6 |
- |
13MoCrV6 |
1.8159 |
50CrV4 |
50CrVA |
735A50 |
47 |
50CV4 |
50CrV4 |
50CrV4 |
2230 |
51CrV4 |
1.8509 |
41CrAlMo7 |
- |
905M39 |
41B |
40CAD6,12 |
41CrAlMo7 |
41CrAlMo7 |
2940 |
41CrAlMo7 |
1.8523 |
39CrMoV139 |
- |
897M39 |
40C |
- |
36CrMoV12 |
36CrMoV13 |
- |
- |
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