18crnimo7-6 alloy steel
OTAI SPECIAL STEEL is 18CrNiMo7-6 alloy steel stockholders and suppliers from china. more 25 years of experience in 18CrNiMo7-6 alloy steel round bar, flat bar, and plate supply.
18CrNiMo7-6 alloy steel is a grade consisting of the addition of chromium, nickel, molybdenum, and coal with a range characteristic for all carburizing grades. Unlike other simple steel grades, 18CrNiMo7-6 alloy steel can be used for much larger sizes and loads. This grade of steel is used for heavy-duty parts and components subjected to high pressures and a highly variable speed of operation.
18CrNiMo7-6 tool steel properties are as below:
Form of Supply
18CrNiMo7-6 steel, we can supply the round bar, steel flat bar, plate, hexagonal steel bar, and steel square block. 18CrNiMo7-6 steel Round bar 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(%) | Si(%) | Mn(%) | P(%) | S(%) |
| 0.15～0.21 | ≤0.40 | 0.50～0.90 | ≤: 0.025 | ≤: 0.015 |
| Cr(%) | Mo(%) | Ni(%) | Al(%) | Cu(%) |
| 1.50～1.80 | 0.25～0.35 | 1.40～1.70 | ≤0.05 |
≤0.30 |
Mechanical Properties
Hardness in condition +A: < 229 HBW
Hardness in condition +TH: 179 – 229
HBW Hardness in condition +FP: 149 – 201
HBW Hardness in condition +S: < 255 HBW
Heatment Treatment
Hot Forged temperature/ ℃: 1150 ~ 1150
The heat treatment temperature / ℃ | annealing: 650 ~ 700
Heat treatment temperature / ℃ | carburizing: 880 ~ 980
Heat treatment temperature / ℃ | hardening Ⅰ (heart) : 830 ~ 870
Heat treatment temperature / ℃ | hardening Ⅱ (surface) : 780 ~ 820, oil
Heat treatment temperature / ℃ | tempered: 150 ~ 200
After annealing hardness, HBS acuities were: 229
Heart of mechanical properties (after surface hardening) | size/mm: phi 30
Heart of mechanical properties (after surface hardening) | sigma b/MPa: 1080 ~ 1320
Heart of mechanical properties (after surface hardening) | sigma s p/MPa: 785
Heart of mechanical properties (after surface hardening) | delta 5 or greater (%) : 8
Heart of mechanical properties (after surface hardening) | bits (%) or greater: 35
Heart of mechanical properties (after surface hardening) | AKV (1)/J: 41
Certification
18CrNiMo7-6 tool steel is available with a cast and analysis certificate or a BS EN 10204 3.1 mill certificate, please request when placing any orders.
Quality Assured Supply
18crnimo7-6 alloy steel is supplied in accordance with our ISO 9001 : 2008 registration.
Contact our experienced sales team to help you with your 18CrNiMo7-6 tool steel questions inquiry by Email or Telephone. The questions will be replied in 24 hours.
Email: jack@otaisteel.com
Tel: +86 769 2319 0193
Fax: +86 769 8870 5839