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M48 DIN 1.3207 is a high-performance,high-speed tool steel with optimum cutting performance and good hardness in high temperature environment,also plus a good degree of toughness.
Applications:
DIN 1.3207 mostly use for universal application to give CNC knife tool a life times against cutting,wear and tear. All kinds of blades for wood machining,CNC machining,plastic mold machining etc.For severely stressed tools in roughing work,cutting tools for very hard materials,turning blades,wood working tools and tools for cold work.
Physical properties(average values)at ambient temperature:
Modulus of elasticity[103 x N/mm2]:217 Density [g/cm3]:8.23
Thermal conductivity[W/m.K]:19.0
Electric resistivity[Ohm mm2/m]:0.80
Specific heat capacity[J/g.K]:0.46
Equivalent grades of steel HS10-4-3-10 (1.3207)
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EU |
Germany |
Japan |
France |
England |
Italy |
Sweden |
Poland |
Czechia |
Austria |
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HS10-4-3-10 |
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Chemical composition % of steel HS10-4-3-10 (1.3207): EN 4957-2000
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C |
Si |
Mn |
P |
S |
Cr |
Mo |
W |
V |
Co |
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1.2 – 1.35 |
max 0.45 |
max 0.4 |
max 0.03 |
max 0.03 |
3.8 – 4.5 |
3.2 – 3.9 |
9 – 10 |
3 – 3.5 |
9.5 – 10.5 |
MECHANICAL PROPERTIES
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Yield |
Tensile |
Impact |
Elongation |
Reduction in cross section on fracture |
As-Heat-Treated Condition |
Brinell hardness (HBW) |
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171 (≥) |
692 (≥) |
43 |
43 |
34 |
Solution and Aging, Annealing, Ausaging, Q+T,etc |
243 |
Heat Treatment Process Requirement:
The below technical details strictly follow DIN 1.3207 standard to get right ratio among different crystal organization,to let this material performance can be as good as required.Below is the details:
Soft Annealing:
Heat to 800-860C,cool slowly in furnace.This will produce a maximum Brinell hardness of 300.
Stress Relieving:
Stress relieving to remove machining stresses should be carried out by heating to 600-650″C,holding for one hour at heat,followed by air cooling.This operation is performed to reduce distortion during heat treatment.
Hardening:
Harden from a temperature of 1200-1230″C followed by oil,air quenching or warm bath at 540″C.Hardness after quenching is 64-66 HRC.
Tempering:
Tempering temperature:540-570″C,at least 2x for 65-67 HRC.Hardness after tempering is 64-67 HRC.
