Alloy steels comprise a broad spectrum of steels whose compositions are more than the limitations of C, Mo, Cr, Va, Mn, Ni, Si, and B which have been fixed for carbon steels. These steels are more responsive to mechanical and heat treatments than carbon steels.
Element | Content(%) |
---|---|
Iron, Fe | 96.93-97.85 |
Chromium, Cr | 0.80-1.10 |
Manganese, Mn | 0.70-0.90 |
Carbon, C | 0.35-0.40 |
Silicon, Si | 0.15-0.35 |
Molybdenum, Mo | 0.15-0.25 |
Sulfur, S | ≤ 0.040 |
Phosphorous, P | ≤ 0.035 |
Properties | Metric | Imperial |
---|---|---|
Elastic modulus | 190-210 GPa | 27557-30458 ksi |
Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
Hardness, Brinell (annealed and cold drawn) | 187-229 | 187-229 |
Hardness, Knoop (converted from Brinell hardness) | 230 | 230 |
Hardness, Rockwell B (converted from Brinell hardness) | 94 | 94 |
Hardness, Rockwell C (converted from Brinell hardness, value below normal HRC range, for comparison purposes only) | 15 | 15 |
Hardness, Vickers (converted from Brinell hardness) | 218 | 218 |
Machinability (based on 100 machinability for AISI 1212 steel) | 70 | 70 |
Production Route | Hot Rolled, Cold Rolled |
---|---|
Material Standard | AISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, IS & Custom Chemistry |
Size | Width from 100mm to 3000mm ; Length from 500mm to 12000mm |
Thickness | 0.1mm to 400mm |
Delivery Condition | As Rolled, Annealed, Quenched and Tempered, Normalized |
Surface Finish | Plain, Brushed, Cladded |
AFNOR 40 CD 4
AFNOR 42 CD 4
DIN 1.7225
UNI 38 CrMo 4 KB
UNI 40 CrMo 4
UNI G 4O CrMo 4
JIS SCM 4
JIS SCM 4 H
SS 2244
B.S. 708 A 42
B.S. 708 M 40
B.S. 709 M 40
ASTM A322
ASTM A331
ASTM A505
ASTM A519
ASTM A547
SAE J404
SAE J412
SAE J770
1) Structures in Buildings, bridges, railway stations.
2) Fabrication of pipeline components & Industrial equipment.
3) Construction of automotive bodies, warehouses, shipping containers.
4) Commercial appliances, etc.