high carbon steel

high carbon steel

High carbon steel is between 0.55 and 1.6%. Its elasticity and hardness are strong, and is used for saw materials (saws, knives) and spring mechanical parts.

High carbon steel is used in safety shoes, measuring tape, chain parts, springs, clutch parts, safety buckles, spring, can openers, thomson blades, chain part, woodworking tool part, clutch parts, washers, hand saws for woodworking, office-equipment parts, circlips, horn diaphragm.

Chemical composition

S50CM

C 0.47~0.53

Si 0.15~0.35

Mn 0.60~0.90

P 0.030 Max

S 0.035 Max

Cu 0.300 Max

Ni 0.200 Max

Cr 0.200 Max

Ni+CR 0.350 Max

S55CM

C 0.52~0.58

Si 0.15~0.35

Mn 0.60~0.90

P 0.030 Max

S 0.035 Max

Cu 0.300 Max

Ni 0.200 Max

Cr 0.200 Max

Ni+CR 0.350 Max

S60CM

C 0.55~0.65

Si 0.15~0.35

Mn 0.60~0.90

P 0.030 Max

S 0.035 Max

Cu 0.300 Max

Ni 0.200 Max

Cr 0.200 Max

S65CM

C 0.60~0.70

Si 0.15~0.35

Mn 0.60~0.90

P 0.030 Max

S 0.035 Max

Cu 0.300 Max

Ni 0.200 Max

Cr 0.200 Max

S70CM

C 0.65~0.75

Si 0.15~0.35

Mn 0.60~0.90

P 0.030 Max

S 0.035 Max

Cu 0.300 Max

Ni 0.200 Max

Cr 0.200 Max

S75CM

C 0.70~0.80

Si 0.15~0.35

Mn 0.60~0.90

P 0.030 Max

S 0.035 Max

Cu 0.300 Max

Ni 0.200 Max

Cr 0.200 Max

purpose of use

S50CM(SAE1050)

safety shoes, measuring tape, chain parts, springs, clutch parts, safety buckles

S55CM(SAE1055)

safety buckles, spring, can openers, thomson blades

S60CM(SAE1060)

chain part, woodworking tool part, spring

S65CM(SAE1065)

safety buckles, clutch parts, springs, washers

S70CM(SAE1070)

washers, hand saws for woodworking, office-equipment parts, springs

S75CM(SAE1074)

circlips, horn diaphragm, clucth parts, washers, springs