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ATI Allegheny Ludlum Martensitic Stainless Steel Type 420HC

Category Metal , Ferrous Metal , Stainless Steel , T 400 Series Stainless Steel
Manufacturer ATI Allegheny Ludlum
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
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Material Notes:
Allegheny Ludlum Type 420HC is a hardenable straight-chromium stainless steel which combines superior wear resistance of high carbon alloys with the excellent corrosion resistance of chromium stainless steels. Oil quenching this alloy from temperatures between 1800°F and 1950°F produces the high strength and/or wear resistance as well as corrosion resistance.A major use for this grade of heat treatable stainless steels is in cutlery. When blanking cutlery parts from annealed raw material stock, Type 420HC will usually exhibit hardness, yield strength, and tensile strength that are low enough for fine blanking purposes. Type 420HC is a high carbon version of Type 420. When sufficient amounts of carbon are added to straight-chromium stainless steel, the alloy then has the capability to transform its microstructure through proper heat treatment (hardening) into one that will possess optimum strength , hardness, edge retention, and wear resistance.Information provided by Allegheny Ludlum Corporation.
Physical Properties Metric English Comments
Density 7.73 g/cc
0.279 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell B 88
88
Hardness, Rockwell C 56 - 59
56 - 59
Tensile Strength, Ultimate 600 MPa
87000 psi
Typical
Tensile Strength, Yield 310 MPa

@Strain 0.200 %
45000 psi

@Strain 0.200 %
Elongation at Break 28 %
28 %
Modulus of Elasticity 200 GPa
29000 ksi
Thermal Properties Metric English Comments
CTE, linear 11.2 µm/m-°C

@Temperature 20.0 - 200 °C
6.22 µin/in-°F

@Temperature 68.0 - 392 °F
12.5 µm/m-°C

@Temperature 20.0 - 600 °C
6.94 µin/in-°F

@Temperature 68.0 - 1110 °F
Thermal Conductivity 24.207 W/m-K

@Temperature 100 °C
168.00 BTU-in/hr-ft²-°F

@Temperature 212 °F
Melting Point 1454 - 1510 °C
2649 - 2750 °F
Solidus 1454 °C
2649 °F
Liquidus 1510 °C
2750 °F
Component Elements Properties Metric English Comments
Carbon, C 0.44 %
0.44 %
Chromium, Cr 13 %
13 %
Iron, Fe 86 %
86 %
as balance
Manganese, Mn <= 1.0 %
<= 1.0 %
Nickel, Ni <= 0.50 %
<= 0.50 %
Phosphorous, P <= 0.040 %
<= 0.040 %
Silicon, Si <= 1.0 %
<= 1.0 %
Sulfur, S <= 0.030 %
<= 0.030 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.0000560 ohm-cm
0.0000560 ohm-cm
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