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AISI 4140 Alloy Steel | 42CrMo4 | 42CrMoS4 | 1.7225 | SCM440 | 42CrMo
HuiTong Steel is the leading stockist of AISI 4140 alloy steel. We have running stock of solid round bars dia.16-300mm, steel plate size of 14-150 x 2000-2300mm. Annealed or Prehardened condition. We can also do furthur machining as per customers' requirement.
Equivalence
Chemical Composition (%)
AISI / SAE
DIN / W.Nr
JIS
GB
4140
42CrMo4 / 42CrMoS4 / 1.7225
SCM440
42CrMo
Other designations equivalent to AISI 4140 alloy steel are listed in the following table.
AMS 6349
ASTM A193 (B7, B7M)
ASTM A506 (4140)
ASTM A752 (4140)
AMS 6381
ASTM A194 (7, 7M)
ASTM A513
ASTM A829
AMS 6382
ASTM A29 (4140)
ASTM A513 (4140)
SAE J1397 (4140)
AMS 6390
ASTM A320 (L7, L7M, L7D)
ASTM A519 (4140)
SAE J404 (4140)
AMS 6395
ASTM A322 (4140)
ASTM A646 (4140)
SAE J412 (4140)
AMS 6529
ASTM A331 (4140)
ASTM A711
Steel Grade
C
Si
Mn
P
S
Cr
Mo
42CrMo4
0.38-0.45
≤ 0.40
0.60-0.90
≤ 0.035
≤ 0.035
0.90-1.20
0.15-0.30
1.7225
42CrMoS4
0.38-0.45
≤ 0.40
0.60-0.90
≤ 0.035
0.020-0.040
0.90-1.20
0.15-0.30
4140
0.38-0.43
0.15-0.35
0.75-1.00
≤ 0.035
≤ 0.040
0.80-1.10
0.15-0.25
SCM440
0.38-0.43
0.15-0.35
0.60-0.85
≤ 0.035
≤ 0.040
0.90-1.20
0.15-0.30
42CrMo
0.38-0.45
0.17-0.37
0.50-0.80
≤ 0.035
≤ 0.035
0.90-1.20
0.15-0.25
AISI 4140 Alloy Steel is used for as wide variety of applications where greater toughness and wear resistance is needed over lower carbon grades. Typical applications for 4140 tool steel uses include Components, Adapters, Arbors,strippers, holder blocks, mold bases, ejectors, back up and support tooling, fixtures, jigs, molds, cams, drill collars, Axle Shafts, Bolts, Crankshafts,stubs, couplings, reamer bodies, axles, shafting, piston rods, rams, hydraulic machinery shafts, gears, sprockets, gear racks, chain links, spindles, tool bodies, tool holders, tie rods, Connection Rods, Chuck Bodies, Collets, Conveyor Pins & Rolls, Ejector Pins, Forks, Gears, Guide Rods, Hydraulic Shafts & Parts, Lathe Spindles, Logging Parts, Milling Spindles, Motor Shafts, Nuts, Pinch Bars, Pinions, Pump Shafts,boring bars,tracks, slides, wear strips or parts, forming dies, brake dies, trim dies, bolsters, machinery parts and components, etc.
Mechanical Properties
| Properties | Metric | Imperial |
| Tensile strength | 655 MPa | 95000 psi |
| Yield strength | 415 MPa | 60200 psi |
| Bulk modulus(typical for steel) | 140 GPa | 20300 ksi |
| Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson's ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 25.70% | 25.70% |
| Hardness, Brinell | 197 | 197 |
| Hardness, Knoop (converted from Brinell hardness) | 219 | 219 |
| Hardness, Rockwell B (converted from Brinell hardness) | 92 | 92 |
| Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only) | 13 | 13 |
| Hardness, Vickers (converted from Brinell hardness) | 207 | 207 |
| Machinability (based on AISI 1212 as 100 machinability) | 65 | 65 |
Other profiles we provide include steel rebars and round bars, as well as steel wire and section steel products. Steel plates of the same material include alloy steel plate and carbon steel plate. We can make galvanized steel plates. Steel pipes include hot-rolled steel pipes and cold-rolled steel pipes. If you need pipe flanges and fittings, please leave a message to me.
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Main Product:
Seamless Steel Pipe,
Carbon Steel Plate,
Galvanized Steel Coil,
Color Coated Roll,
Corrugated Roofing Sheet,
Welded Pipe
