CS80 Spring Steel


CS80 is a spring steel grade within BS1449. It is the equivalent to C75S and AISI /SAE 1075, and closely matches EN42.

CS80 is usually supplied in the hardened and tempered condition. 

It is widely used for the manufacture of flat springs, knives and blades. It has gained popularity in recent years, as whilst it was notoriously difficult to cut, the advent of laser and water jet cutting techniques have largely overcome this issue.

Our material is precision rolled with a good surface finish, close thickness tolerance and good flatness.



Carbon0.75-0.85%Phosphorous0.045% max
Manganese0.50-0.90%Sulphur0.045% max

Our stock


48/50 HRC is most suitable for Blades and Saws 42/44 HRC for most spring applications.

Laser Sheet- CS80 Hardened and Tempered 48/50 HRC
6101.14183010 kilos
4951.54247515 kilos
6202.04186018 kilos
6202.54186023 kilos
6202.94186027 kilos
5104.04175030 kilos
Laser Sheet- CS80 Hardened and Tempered 42/44 HRC
3051.0020005 kilos
3471.2417406 kilos
4951.54198012 kilos
6201.85186017 kilos
3102.0018609 kilos
3102.009305 kilos
5102.002040 16 kilos
3102.25186010 kilos
3602.54204015 kilos
6102.90183025 kilos
6103.00184027 kilos
5104.04183035 kilos
5105.04102025kilos *
6205.04186046 kilos
10356.30103554 kilos
Half sheets and other sizes available, call to check

*46/48 HRC

We can by arrangement supply thicknesses up to 8mm, although the higher thickness material will not have a bright finish. Call us for further information.

Smaller sheets

Hardened and Tempered Smaller sheets for next day despatch

1550.1010000.12 kilos
1550.1310000.15 kilos
1650.2010000.25 kilos
1520.2510000.32 kilos
3000.3010000.70 kilos
1560.3810000.46 kilos
2400.4010000.77 kilos
1500.4610000.54 kilos
3000.5010001.20 kilos
1520.6010000.71 kilos
2160.6310001.06 kilos
3000.7012502.06 kilos
3000.8010001.85 kilos
2280.9010001.61 kilos
3001.0010002.40 kilos
3001.2010002.80 kilos
2031.6010002.80 kilos
3502.0010004.80 kilos
3502.5010005.90 kilos
Other sizes available, call to check

Please note some of the lower thicknesses are CS95/CS100 rather than CS80