OTAI SPECIAL STEEL is 4135 Alloy steel stockholders and suppliers from china. more 16 years experience in 4135 steel supply.
AISI 4135 alloy Steel is a high quality Quenched and Tempered Alloy Structural steel, It belong to the high quality low carbon, Oil Quenched & Tempered Hardness is 28-34 HRc. AISI 4135 steel Annealing delivery hardness less than 250HB.
AISI 4135 Alloy structural steel properties is a chromium molybdenum alloy steel specification. 4135 With a lower carbon content range, So the 4135 alloy steel have better weldability than AISI 4140 Alloy steel.
Related Specifications ASTM A29/A29M DIN EN 10083/3 JIS G4053 GB GB/T 3077
Form of Supply
AISI 4135 Alloy steel, we can supply the round bar, steel flat bar, plate, hexagonal steel bar and steel square block. AISI 4135 steel Round bar can be sawn to your required lengths as one offs or multiple cut pieces. 4135 alloy steel Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances.
Chemical composition
| C(％) | 0.28～0.33 | Si(％) | 0.15～0.35 | Mn(％) | 0.40～0.60 | P(％) | ≤0.035 |
| S(％) | ≤0.040 | Cr(％) | 0.80～1.10 | Mo(％) | 0.15～0.25 |
Heat treatment Related
- Annealing of 4135 Alloy structural steel
Slowly heated to 850 ℃ and allow enough times, let the steel to be thoroughly heated, Then cool slowly in the furnace to 480 ℃ follow by air cool. The 4135 alloy steel will get MAX 250 HB （Brinell hardness）.
- Normalizing of 4135 Alloy structural steel
Heated slowly to 850-880°C,Keep about 2 hours.Then cool in air.
- Hardening of 4135 Alloy structural steel
Heated slowly to 870-890°C, Then after adequate soaking at this temperature quench in oil. Temper as soon as tools reach room temperature.
- Tempering of 4135 Alloy structural steel
Heated to 400-565°C, Keep at the temperature for 2 hours per 25mm of section, then allow to cool in air.
Mechanical Properties in Tempering Condition(18-22 HRC)
Applications
AISI 4135 steel is widely used for a variety of applications in the oil and gas sector. Typical applications such as valve bodies, pumps and fittings, Shaft, spindle, and the high load of wheel, bolts, double-headed bolts, gears, etc
Regular size and Tolerance
| 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 4135 have not specified size, pls contact our experienced sales team.
AISI 4135 alloy steel round bar and flat sections can be cut to your required sizes. 4135 alloy steel ground bar can also be supplied, providing a high quality tool steel precision ground tool steel bar to your required tolerances. AISI 4135 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 4135 alloy steel questionsadn 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
