AISI 4140RH Alloy structural steel stockholders and suppliers from china. Otai Special Steel are 4140RH steel supplier in round bar, flat bar, plate, hexagonal bar, square bar, hollow bar / Pipe / Tube.
AISI 4140RH Alloy Steel is a high quality Quenche and Tempere Alloy Structural steel, It belong to the high quality medium carbon, Its chemical composition is same with 4140. But Its Technical requirements for structural steel with specifie hardenability bands. 4140RH steel Oil Quenched & Tempered Hardness is 28-34 HRc.4140RH Annealing delivery hardenss less than 250HB. AISI 4140RH Alloy structural steel properties is very simliar with GB 42CrMoH steel, JIS SCM440H and DIN 1.7225 Alloy structural steel.
Related Specifications ASTM A29/A29M SAE J1868 DIN EN 10083/3 JIS G4053 GB GB/T 3077
- AISI 4140RH Alloy Steel Chemical composition
| C(％) | 0.38～0.43 | Si(％) | 0.15～0.35 | Mn(％) | 0.75～1.00 | P(％) | ≤0.035 |
| S(％) | ≤0.040 | Cr(％) | 0.80～1.10 | Mo(％) | 0.15～0.25 |
2. Form of Supply AISI 4140RH Alloy Steel
ASTM 4140RH Alloy structural steel, we can supply the 4140RH round bar, steel flat bar, plate, hexagonal steel bar and steel square block. 4140RH steel Round bar can be sawn to your required lengths as one offs or multiple cut pieces. 4140RH Rectangular pieces can be saw from flat bar or plate to your specific sizes. Ground tool steel bar can be supplie, providing a quality precision finished bar to tight tolerances.
3. AISI 4140RH Alloy Steel Applications
DIN 4140RH Tool steel is a alloy structural steel, 4140RH is used for engineering structural, like high tensile shafts, bolts and nuts, gears, pinions and spindles. Locomotive traction with the big gear, supercharger drive gear, pressure vessel, rear axle, gear load of connecting rod and a spring clip,4140RH can also be used to under 2000 m deep well of oil drill pipe joint and the fishing tool, and can be used for bending machine mould, etc
4. AISI 4140RH Alloy Steel Regular size and Tolerance
ASTM 4140RH Alloy Steel Steel round bar: Diameter Ø 5mm – 3000mm
AISI 4140RH Alloy Steel Steel plate: Thickness 5mm – 3000mm x Width 100mm – 3500mm
SAE 4140RH Alloy Steel Steel Hexagonal bar: Hex 5mm – 105mm
Square bar / Flat bar: Thickness 2-200mm x width 4-510mm x length
| 1) Hot Rolled round bar | |||
| Diameter (mm) |
Diameter Tolerance (mm) |
Diameter (mm) |
Diameter Tolerance (mm) |
| ≤12.70 | -0.13 ～0.30 | >50.80～63.5 | -0.25～0.76 |
| 12.7～25.40 | -0.13～0.41 | >63.50～76.20 | -0.25～1.02 |
| >25.4～38.10 | -0.15～0.51 | >76.20～101.60 | -0.30～+1.27 |
| >38.1～50.80 | -0.20～0.64 | >101.60～203.20 | -0.38～3.81 |
| 2) Hot Rolled steel plate | |||
| Thickness (mm) |
Thickness Tolerance (mm) |
Thickness (mm) |
Thickness Tolerance (mm) |
| ≤25.4 | -0.41～0.79 | >127～152 | -1.60～2.39 |
| >25.4～76 | -0.79～1.19 | >178～254 | -1.98～3.18 |
| >76～127 | -1.19～1.60 | >254～305 | -2.39～3.96 |
Others 4140RH have not specified size, pls contact our experienced sales team.
5. AISI 4140RH Alloy Steel Processing
4140RH tool steel round bar and flat sections can be cut to your required sizes. AISI 4140RH Alloy Steel 4140RH tool steel ground bar can also be supplied, providing a high quality tool steel precision ground tool steel bar to your required tolerances. 4140RH steel is also available as Ground Flat Stock / Gauge Plate, in standard and nonstandard sizes.
Contact our experienced sales team to help you with your AISI 4140RH Alloy Steel questions and enquiry by Email or Telphone. The questions will be reply in 24 hours.
OTAI SPECIAL STEEL CO., LTD
Email: jack@otaisteel.com TEL: 0086-769-33232622 FAX: 0086-769-88705839
