42CrMo5-6 alloy steel round bar
OTAI SPECIAL STEEL is 42CrMo5-6 alloy steel stockholder and supplier from China. more than 25 years experience in 42CrMo5-6 steel round bar supply.
42CrMo5-6 is a Chromium-Molybdenum alloy steel that is used for fasteners with specific temperature properties. It is also known as 1.7233.
42CrMo5-6 is classified as a special alloy steel. It is formulated for primary forming into wrought products. The EN 10269 42CrMo5-6 Specification is a European Standard that sets requirements for bars, rods, and semi-finished products for fasteners.
42CrMo5-6 steel properties as below:
Form of Supply
42CrMo5-6 steel, we can supply the round bar, steel flat bar, plate, hexagonal steel bar, and steel square block. Round bars can be sawn to your required lengths as one-offs or multiple-cut pieces. Rectangular pieces can be sawn from flat bars or plates to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances.
-
- Round
-
- sheet
-
- Square
-
- Plate
Chemical composition
| C(％) | 0.39 – 0.45 | Si(％) | ≤0.040 | Mn(％) | 0.40～0.70 | P(％) | ≤0.035 |
| S(％) | ≤0.035 | Cr(％) | 1.20～1.50 | Mo (％) | 0.50～0.70 |
Mechanical properties of grade 42CrMo5-6 NF EN 10269
| Proof strength Rp0.2 (MPa) |
Tensile strength Rm (MPa) |
Impact energy KV (J) |
Elongation at fracture A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 498 (≥) | 194 (≥) | 12 | 11 | 12 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 243 |
Physical properties of grade 42CrMo5-6 NF EN 10269
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
Modulus of elasticity kN/mm2 |
Expansion rate |
|---|---|---|---|---|---|---|---|
| 724 (≥) | 722 (≥) | 31 | 44 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 221 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 435 | 423 | 321 |
| Rm – Tensile strength (MPa) (+QT) | 850-1060 |
| Rp0.2 0.2% proof strength (MPa) (+QT) | 640-700 |
| KV – Impact energy (J) (+QT) | +20° 40-50 |
| A – Min. elongation at fracture (%) (+QT) | 16 |
| Z – Reduction in cross section on fracture (%) (+QT) | 50 |
| Brinell hardness (HBW): (+A) | 241 |
| Brinell hardness (HBW): (+S) | 255 |
Quality Assured Supply
42CrMo5-6 steel is supplied in accordance with our ISO 9001 : 2023 registration.
Contact our experienced sales team to help you with your 42CrMo5-6 alloy steel round bar questions and inquiries by Email or telephone. The questions will be replied to in 24 hours.
Email:jack@otaisteel.com
Tel: +86 769 2319 0193
Fax: +86-769-88705839