NADCA Approved ESR, VAR, PM, Conventionals and Metal Powders
NADCA Approved ESR, VAR, PM, Conventionals and Metal Powders
NADCA Approved ESR, VAR, PM, Conventionals and Metal Powders
OSS Special Steel Canada offers a range of knife steel materials designed for cutting applications where hardness potential, wear resistance, and microstructural stability are critical.
Our knife steel portfolio covers multiple alloy concepts with varying carbon and carbide-forming element contents, allowing material selection based on performance targets and processing preferences.
Grades
The following grades are available within our knife steel range. Chemical compositions are provided for reference to support material comparison and selection.
Size range we can offer
Thickness: >=0.1″
Width: <= 24″ (Ground surface) – <=31.5″ (Bright surface)
Length:39.37″ – 47.24″ (Ground surface) – 74.8″ – 90.55″(Bright surface)
Ground surface
Bright surface
| Grades | Chemical Composition | |||||
|---|---|---|---|---|---|---|
| C | W | Mo | Cr | V | Co | |
| TPMB31 | 0.81 | - | 1.35 | 7.75 | 2.8 | - |
| TPMB44 | 1.4 | - | 3.5 | 4.7 | 3.7 | - |
| TPMB91 | 1.83 | - | 1.35 | 5.25 | 8.7 | - |
| TPMB101S | 2.5 | - | 1.3 | 5.25 | 9.35 | - |
| TPMB41 | 1.4 | 1.7 | 1.3 | 7.8 | 3.8 | - |
| TPMB42 | 1.4 | 3.55 | 1.5 | 6.4 | 3.65 | Nb=0.18 |
| TPMB92 | 2.9 | - | 1.4 | 8 | 9.75 | - |
| TPMB13W | 0.55 | 2.2 | 2.8 | 4.5 | 1 | - |
| TPMD11 | 1.6 | - | 0.8 | 16 | 0.45 | - |
| TPMD21 | 2.78 | - | 1.1 | 25 | 2.5 | - |
| TPMD31 | 1.7 | - | 1 | 18 | 3 | - |
| TPMD41A | 1.9 | 0.6 | 1 | 20 | 4 | - |
| TPMD41B | 2.05 | - | 2 | 11 | 4 | +Nb +N |
| TPMD42 | 1.45 | - | 2 | 14 | 4 | - |
| TPMD04 | 1.05 | - | 4 | 14 | - | - |
| TPMD91 | 2.36 | - | 1.06 | 14.23 | 8.62 | - |
| TPMD01 | 1.05 | - | 1.2 | 17.5 | 0.1 | 1.5 |
| TPM440C | 0.95 | - | 0.75max | 16 | - | - |
