75Cr1 High Carbon Spring Steel

Introduction

75Cr1 is a high carbon steel with a carbon content between 0.74% and 0.80%. The addition of chromium facilitates the heat treatment process and allows higher hardness to be achieved than the standard C75 Carbon Steel.

75Cr1 carbon steel is a variation on En10132 C75, and US specification 1075. It is a high carbon steel strip grade supplied in either hardened and tempered or annealed condition.

75Cr1 carbon steel can be cut by laser or waterjet. It is generally used in manufacturing knives, springs, doctor blades, clutch plates, agricultural tools, and shims. Whilst it can and is used for a variety of spring and tool applications, it has found particular popularity in the manufacture of saws.

fushun stock 75Cr1 carbon steel from 1mm through to 5mm in the hardened and tempered condition and up to 10mm in the annealed condition.

Composition

75Cr1 Carbon Steel

Carbon – 0.74 – 0.8%

Manganese – 0.65 – 0.8%

Silicon – 0.25 – 0.45%

Phosphorous – 0.025% max

Sulphur – 0.010% max

Chromium – 0.3 – 0.45%

75Cr1 Carbon Steel Equivalent grades

CK75

CS70

C75

CS80

1074

1.2003

1075+cR

75CR1 SPRING STEEL STRIP

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75Cr1 High Carbon Spring Steel Strip

Spring steel strip normally contains between 0.40% to 0.80% carbon, with alloy elements added for the higher integrity products such as automotive clutches etc. Spring steels are quite used in the production of springs, also used in a number of applications where hardness or resistance to bending is required, such as lock parts or tools.

Spring steels are supplied in either annealed condition or hardened and tempered condition. Steel supplied in the annealed condition is usually hardened after the stamping and forming operation in component form. Hardened and tempered strip is more suitable for flat components or where the production is primarily laser cutting or plain blanking.

75Cr1 is a high carbon steel with carbon between 0.70% to 0.80%. The addition of chromium facilitates the heat treatment process and allows higher hardness to be achieved than the standard C75 carbon steel.

Supply Conditions:

Hardened and tempered (H+T), annealed (A)

Thickness: 0.15-2.50mm

Width: 8.00-300.00mm

Hardness: 29-55HRC

Surface: nature, polished, blue, yellow, black

Edge: slit, sheared, square, rouned

Heat treatment advice

Recommendation for hardening

830-860 C / 1530-1580 F

Quenching Medium Oil

75CR1 Carbon Steel, Common Applications

Clutch Plates

Springs

Knives and Blades

Hand Tools

Agricultural Tools

Shims

Doctor Blades

Biomass Stirrers

Acceptance testing and test certificates

EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.