75Cr1
About 75Cr1
75CR1 is a variation on En10132 C75, and US specification 1075.
It is a high carbon steel strip grade supplied in either the hardened and tempered or annealed condition.
The addition of chromium facilitates the heat treatment process and allows higher hardness to be achieved than the standard C75.
Whilst it can and is used for a variety of spring and tool applications, it has found particular popularity in the manufacture of saws.
BSS stock 75Cr1 from 1mm through to 5mm in the hardened and tempered condition and up to 10mm in the annealed condition.
What we supply
We supply 75Cr1 in sheet and coil form.
Annealed condition:
up to 10mm thick.
Hardened and tempered condition:
- 1mm – 5mm thick.
Composition
| Carbon | 0.74-0.80% | Silicon | 0.25-0.45% |
| Manganese | 0.65-0.80% | Phosphorous | 0.025% max |
| Sulphur | 0.010% max | Chromium | 0.30-0.45% |
Hardness
Our hardened and tempered material is stocked in two hardness ranges – 42/44HRC and 48/50HRC.
| We can also supply hot rolled picked annealed. |
Heat treatment advice
| Recommendation for hardening |
| 830-860 C / 1530-1580 F |
| Quenching Medium Oil |
Related Specifications
75Cr1 is related to:
| CK75 | 1074 | 1.2003 | c75 |
| CS70 | CS80 | 1075+Cr |
Annealing temperature
Common Applications
- Clutch Plates
- Springs
- Knives and Blades
- Hand Tools
- Agricultural Tools
- Shims
- Doctor Blades
- Biomass Stirrers