90MnCrV8, 1.2842, AISI O2 - tool steel
1.2842, 90MV8, 90MnCrV8 - TOOL STEEL FOR COLD WORK ACCORDING TO ISO 4957, PN-H-85023.
| Standard | Steel Grade | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Chemical Composition % | ||||||||||
| C: | Mn: | Si: | P: | S: | Cr: | Ni: | Mo: | V: | W: | |
| PN | NMV | |||||||||
| 0.85 - 0.95 | 1.8 - 2.1 | 0.15 - 0.40 | <0.030 | <0.030 | <0.35 | <0.35 | <0.20 | 0.10 - 0.25 | <0.20 | |
| ISO | 1.2842 - 90MnCrV8 | |||||||||
| 0.85 - 0.95 | 1.8 - 2.2 | 0.10 - 0.40 | <0.030 | <0.030 | 0.2 - 0.5 | - | - | 0.05 - 0.20 | - | |
| GB/T | 9Mn2V | |||||||||
| 0.85 - 0.95 | 1.7 - 2.0 | <0.40 | <0.030 | <0.030 | 0.1 - 0.25 | - | - | 0.10 - 0.25 | - | |
| NF | 90MV8 - 90MnV8 | |||||||||
| 0.80 - 0.95 | 1.8 - 2.2 | 0.1 - 0.4 | - | - | - | - | - | 0.05 - 0.20 | - | |
| ASTM | AISI O2 - UNS T31502 | |||||||||
| 0.85 - 0.95 | 1.4 - 1.8 | <0.5 | <0.030 | <0.030 | <0.50 | - | <0.3 | <0.3 | - | |
| GOST | 9G2F - 9G2F | |||||||||
| 0.85 - 0.95 | 1.7 - 2.2 | 0.1 - 0.4 | <0.030 | <0.030 | - | <0.4 | <0.2 | 0.1 - 0.3 | <0.2 | |
NMV, 1.2842, 90MnCrV8 - Specification and Application
Cold-work tool steel, hardenable and wear resistant. This grade is not very prone to deformation during heat treatment, shows high dimensional stability, and provides long-lasting blade durability. It does not handle excessive heating well, due to its low tempering resistance. This steel is used for manufacturing precision tools and measuring plates, dies, woodworking milling cutters, broaches, hand reamers, cutting plates, circular knives, blades for cutting paper, tobacco, and leather, threading jaws, spindles, gauges, micrometer screws, and molds for pressing plastic parts.
Mechanical Properties of 90MnCrV8, 1.2842
- Hardness in annealed (softened) state: <229 HB
- Hardness after hardening: >61 HRC
- Hardness after hardening and tempering at temperature
- 200°C = >61.0 HRC
- 250°C = 60.4 HRC
- 300°C = 58.3 HRC
- 350°C = 56.0 HRC
- 400°C = 53.0 HRC
- 500°C = 47.0 HRC
- 550°C = 44.0 HRC
- Coefficient of linear expansion: 11.7 * 10-6 K-1
- Thermal conductivity: 25 W*m*K
Heat treatment - processes and temperatures:
- Soft annealing at temperatures of 680-700°C
- Stress-relief annealing with slow cooling at temperatures of 600-680°C
- Quenching in oil at temperatures of 780-800°C
- Tempering in air at temperatures of 200-280°C
In the above mentioned grades the company offers:
Substitutes, equivalents and other species designations
9G2F
9Г2Ф
90MnV8
MSZ M1
VM18
C.3840
90MV8
BS BO2
90MnVCr8KU
CSN 19312
9MnV
AISI O2
UNS T31502
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