GD 420
Equivalent materials: 1.4021/1.4028 SAE 51420 AISI 420 GD 420 is a vacuum induction melted, argon gas atomized, and spherical powder for additivemanufacturing. It is a general-purpose medium carbon-chromium hardenable martensitic steel with good strength and good corrosion resistance in mild environments. It is capable of being through hardened up to 50 HRC by air-cooling in medium and small sections. Typical applications are cutting utensils, surgical and dental instruments, molds and multi-purpose tools.
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Description
GD 420
Equivalent materials:
1.4021/1.4028
SAE 51420
AISI 420
GD 420 is a vacuum induction melted, argon gas atomized, and spherical powder for additive manufacturing. It is a general-purpose medium carbon-chromium hardenable martensitic steel with good strength and good corrosion resistance in mild environments. It is capable of being through hardened up to 50 HRC by air-cooling in medium and small sections. Typical applications are cutting utensils, surgical and dental instruments, molds and multi-purpose tools.
Chemical composition, %
|
Element |
Cr |
Mn |
Si |
C |
Fe |
|
Content, % |
12.5 |
1.2 |
0.5 |
0.23 |
Balance |
Typical powder properties
|
Nominal particle range |
Hall flow |
Apparent density |
|
15–45 µm |
18 s/50 g |
4.0 g/cc |
|
Other particle range |
0-25 µm 50-150 µm |
|
Heat treatment: Stress relieved at 200 °C in air .Stress relieved at 650 °C in Ar .Quenched and Tempered – Austenitized at 980 °C in Ar followed by oil quench, Tempered at 200 °C in air.
1.4021
420
1.4028
SAE 51420
AISI 420
AM
powder
additive manufacturing
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