SUS 420J2

HuaNickel SUN 420 is a hardenable martensitic stainless steel with a similar chemical composition to 410, mainly due to the difference in carbon content. HuaNickel SUN 420 stainless steel has a lower carbon content than 410, which allows it to achieve higher strength and hardness at lower ductility.  SUN 420 has corrosion resistance comparable to 410 and is typically used in applications that require high strength, high wear resistance, or good edge retention.

SUS 420J2Chemical composition：

	Fe	C	Mn	P	S	Si	Cr
Min	Bal	0.15	–	–	–	–	12
Max		–	1	0.04	0.03	1	14

SUS 420J2Physical properties：

Density	0.278 lb/in3
Melting point	2650 – 2750°F
Poisson’s ratio	0.28
Resistivity	25.6 µΩ • in
Coefficient of thermal expansion（68°F-212°F）	5.833 µin/in •°F
Thermal conductivity（212°F）	14.4 BTU/(hr•ft•°F)

SUS 420J2Mechanical properties：

The temperature becomes warmer，°F	Ultimate tensile strength，ksi	0.2% yield strength，ksi	hardness，HRC
anneal	85.8	51.5	163 HBW
440	255.2	190.1	48
550	229.6	176	44
600	232.9	179	45
800	326	185.6	46
900	233	179.3	46
1000	158.5	137.9	36
1200	121.6	94.6	23

SUS 420J2Stainless steel characteristics：

High Carbon Variant 410

The achievable strength and hardness are higher than 410 compared to 410

High abrasion resistance and edge retention

SUS 420J2Uses of stainless steel：

Industrial chains, bearings, firearms, surgical instruments, pumps and valves, plastic injection molds and molds, etc

Relevant standards：

AMS: 5621, QQ-S763

ASTM: A276, A484