1.0601, DIN C60, AISI 1060
GENERAL CHARACTERISTICS
C60 steel is an unalloyed medium carbon engineering steel which has 0.57%-0.65% Carbon as per EN10083 standard. It has characteristics similar to that of C55 carbon steel which has high hardness and high strength after hardening.C60 is difficult to weld, and machinability is poor due to high carbon content. This steel is generally supplied in an untreated or normalized condition.
Designation by Standards
Mat. No. |
DIN |
EN |
AISI |
1.0601 |
C60 |
- |
1060 |
Chemical Composition (in weight %)
C |
Si |
Mn |
Cr |
Mo |
Ni |
V |
W |
Others |
0.61 |
max. 0.40 |
0.75 |
max. 0.40 |
max. 0.10 |
max. 0.40 |
- |
- |
(Cr+Mo+Ni)= max. 0.63 |
Description C60 is one of the higher carbon contents (0.60%) steels. It is more difficult to fabricate than the lower carbon grades. Applications Applications include hand tools such as screwdrivers, pliers and similar items. Physical properties (average values) at ambient temperature Modulus of elasticity [103 x N/mm2]: 210 Density [g/cm3]: 7.85 Thermal conductivity [W/m.K]: 46.6 Electric resistivity [Ohm mm2/m]: 0.127 Specific heat capacity[J/g.K]: 0.46 Coefficient of Linear Thermal Expansion 10-6 °C-1
20-100°C |
20-200°C |
20-300°C |
20-40°C |
20-500°C |
11.1 |
12.1 |
12.9 |
13.5 |
13.9 |
Soft Annealing Heat to 680-710°C, cool slowly in furnace. This will produce a maximum Brinell hardness of 241. Normalizing Normalizing temperature: 820-86°C/air. Hardening Harden from a temperature of 800-840°C followed by water or oil quenching. Tempering Tempering temperature: 550-660°C/air. Mechanical Properties in Hardened Tempered Condition
Diameter (mm) |
0.2 % proof stress (N/mm²) |
Tensile strength (N/mm²) |
Elongation A5(%) |
Reduction Z (%) |
up to 16 |
570 |
830-980 |
11 |
20 |
17-40 |
490 |
780-930 |
13 |
30 |
41-100 |
450 |
740-890 |
14 |
35 |
Mechanical Properties in Normalized Condition
Diameter (mm) |
0.2 % proof stress (N/mm²) |
Tensile strength (N/mm²) |
Elongation A5 (%) |
up to 16 |
min. 380 |
min. 710 |
min. 10 |
17-100 |
min. 340 |
min. 670 |
min. 11 |
101-250 |
min. 310 |
min. 650 |
min. 11 |
Diagram Tempering Temperature – Mechanical Properties
Forging Hot forming temperature: 1100-800°C. Machinability Machinability of C60 and all of the higher carbon steels is relatively poor. C60 rates at 55 to 60 % that of the AISI 1112 steel which is considered 100% machinable. Corrosion Resistance This steel is not corrosion resistant. it will rust unless protected. Welding C60 may be welded by all of the conventional methods. However both pre-heat and post-heat should be used when welding by an approved procedure. Pre-heat at 260 to 320°C and post-heat at 650 to 780°C. Cold working Cold working is difficult even in the annealed condition although it may be done by conventional methods but requires greater force than the lower carbon steels.