group nameTool Steel Bars
Min Order1 piece
brand namefushun
model1.2378
payment methodT/T, L/C, D/P D/A
update timeTue, 12 Oct 2021 14:18:52 GMT
Min Order1 piece
1.2378 is Cold working steel. Ledeburitic chromium steel with high durability and cutting performance.
Tools for cutting of dynamo and transformer sheet, measuring instruments, tools for processing
of plastics.
Mat.No.: 1.2378
DIN: X220CrVMo12-2
C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Mo(%) | V(%) |
2.15-2.30 | 0.15-0.30 | 0.25-0.40 | Max 0.035 | Max 0.035 | 12.0-13.0 | 0.80-1.00 | 2.00-2.30 |
Proof strength | Tensile strength | Impact energy | Elongation at fracture | Reduction in cross section on fracture | As-Heat-Treated Condition | Brinell hardness (HBW) |
933 (≥) | 238 (≥) | 12 | 43 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 122 |
Modulus of elasticity [103 x N/mm2]:210
Density [g/cm3]:7.63
Thermal conductivity [W/m.K]:20.0
Electric resistivity[Ohmmm2/m]:0.65
Specific heat capacity[J/g.K]:0.46
Heat to 820-850 C , cool slowly in furnace . This will produce a maximum Brinell hardness of 260 .
Stress relieving to remove machining stresses should be carried out by heating to 650 C, holding
for one hour at heat, followed by air cooling. This operation is performed to reduce distortion
during heat treatment .
Harden from a temperature of 1070-1100 C followed by air quenching or warm bath quenching
350-450C. Hardness after quenching is 63-64 HRC.
Hot forming temperature: 1050-900°C.
The machinability rating of 1.2378 is roughly 25 % that of free machining carbon steel 1018.
Due to its abrasion resistant nature, machining in the hardened condition should be limited to
finish grinding.
6YRS FUSHUN Metals
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