Alloy steels comprise a wide spectrum of steels whose compositions are more than the limitations of Va, C, Mo, Cr, 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 | 97.33 - 97.87 |
| Chromium, Cr | 0.80 - 1.10 |
| Manganese, Mn | 0.70 - 0.90 |
| Silicon, Si | 0.15 - 0.35 |
| Molybdenum, Mo | 0.15 - 0.25 |
| Carbon, C | 0.330 - 0.380 |
| 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 AISI 1212 steel, as on 100 machinability) | 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 35 CD 4
AFNOR 35 CD 4 TS
DIN 1.7220
UNI 34 CrMo 4 KB
UNI 35 CrMo 4
UNI 35 CrMo 4 F
JIS SCCrM 3
JIS SCM 1
SS 2234
B.S. 708 A 37
AMS 6365C
AMS 6365E
AMS 6372C
AMS 6372D
ASTM A355
ASTM A519
ASTM A711
MIL SPEC MIL-S-16974
MIL SPEC MIL-S-18733
SAE J404
SAE J412
SAE J770
AMS 6352
AMS 6365
AMS 6372
ASTM A29
ASTM A331
ASTM A372 (V-2)
ASTM A519
ASTM A829
SAE J1397
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.