Material for EM-Tec high precision carbon steel cutting tweezers
The EM-Tec high precision cutting tweezers are made from DIN 1.1221 hardened carbon steel and includes the following tweezers.
It is used for the following products:
#50-005015 EM-Tec 15.CS high precision cutting tweezers, 12mm angled blades
#50-005020 EM-Tec 15P.CS high precision cutting tweezers, 12mm parallel blades
#50-005025 EM-Tec 15M.CS high precision cutting tweezers, 10mm angled blades
#50-005152 EM-Tec 152.S high precision mini-cutting tweezers, 4mm angled blades
General remarks:
- Carbon steel DIN 1.1221 (Ck 60, AISI 1060)
- Contains 0.57-0.65 wt% carbon
- Magnetisable
- Hardened by heat treatment with maximum hardness of 57 HRC
- Poor corrosion resistance
- Ideal for cutting soft metal wires (copper, gold, silver, aluminium, steel)
- Typical applications include tweezers and cutting tools for fine mechanics, watch making, jewelery and electronic industry
General composition of Carbon steel 1.1221
Element |
Wt. % |
C |
0.57 – 0.65 |
Mn |
0.60 – 0.90 |
Cr |
≤0.4 |
Ni |
≤0.4 |
Mo |
≤0.1 |
Si |
0.15 – 0.35 |
P |
≤0.035 |
S |
≤0.035 |
Fe |
Balance |
Properties of Carbon Steel 1.1221
| Mechanical Properties | |
State |
Hardened |
Density |
7.9 g/cm3 |
Hardness, HRC |
55-57 |
Tensile strength, ultimate |
850 - 1000 MPa |
Tensile strength, yield 0.2% |
550 MPa |
Elongation at break |
12% |
Modulus of Elasticity |
200 GPa |
Poisson's ration |
0.29 |
Thermal Properties |
|
Coefficient of linear thermal expansion |
11 x 10-6 /°C (20-100°C) |
Coefficient of linear thermal expansion |
12 x 10-6 /°C (20-300°C) |
Specific heat capacity |
0.502 J/(g.K) |
Thermal conductivity |
52W/(m.K) |
Continuous use (service) temperature |
450°C |
Maximum service temperature (short) |
500°C |
Electrical Properties |
|
Resistivity |
0.8 x 10-4 Ohm.cm |
TSB 50-005015 Material for EM-Tec high precision carbon steel cutting tweezers Revision 2.
