High toughness crack arrest wear-resistant steel NM400Tuf-NM500Tuf is the latest upgraded product of a series of traditional wear-resistant steels.It greatly improves impact toughness while maintaining the same strength and hardness of products of the same level,and can effectively inhibit steel plate cracking and crack propagation.
High-toughness crack-arresting wear-resistant steel, "crack-arresting steel" refers to steel with good fracture toughness and brittle crack suppression properties, and has the ability to prevent crack expansion. When there are potential defects or cracks in components, crack arresting steel can prevent the expansion of cracks within a small range and prevent accidents when subjected to dynamic loads and impact loads.
Main Materials Grades:NM400Tuf, NM450Tuf, and NM500Tuf
| Grade |
Yield strength (Typical) MPa |
Tensile strength (Typical)MPa |
Elongation (Typical) A50% |
Brinell Hardness (Typical)HBW |
Impact energy (-20℃) (J) |
| NM400Tuf | ≥1000 (1180) | ≥1200 (1390) | ≥10 (18.3) | 370-430 (405) | ≥48 (113) |
| NM450Tuf | ≥1100 (1290) | ≥1300 (1540) | ≥7 (16.5) | 420-480 (453) | ≥48 (106) |
| NM500Tuf | ≥1200 (1390) | ≥1500 (1680) | ≥7 (14.5) | ≥470 (506) |
≥38 (70) |
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