JIS SNC21

Products Description JIS SNC 21 Chemical Element JIS SNC 21 Mechanical Properties JIS SNC 21 Physical Properties In terms of mechanical properties, JIS SNC21 exhibits good tensile strength. It can withstand significant pulling forces without easily elongating or rupturing, which is essential for...

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Products Description

JIS SNC 21 Chemical Element

Element	Min	Max	Similar
Si	0.1500	0.3500	-
S	-	0.0300	-
P	-	0.0300	-
Ni	1.9500	2.5000	-
Mn	0.3000	0.7000	-
Cu	-	0.3000	-
Cr	0.2000	0.5500	-
C	0.1100	0.1800	-

JIS SNC 21 Mechanical Properties

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
525 (≥)	583 (≥)	21	13	42	Solution and Aging, Annealing, Ausaging, Q+T,etc	223

JIS SNC 21 Physical Properties

Temperature (°C)	Modulus of elasticity (GPa)	Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and	Thermal conductivity (W/m·°C)	Specific thermal capacity (J/kg·°C)	Specific electrical resistivity (Ω mm²/m)	Density (kg/dm³)	Poisson's coefficient, ν
13	-	-			0.41	-
411	424	-	31.3	433		-
452	-	42	12.2			322	314

In terms of mechanical properties, JIS SNC21 exhibits good tensile strength. It can withstand significant pulling forces without easily elongating or rupturing, which is essential for applications where components are subjected to tensile loads. It also has a reasonable level of hardness, providing resistance to wear and abrasion. The steel's ductility allows it to be formed and shaped through manufacturing processes such as forging, machining, and welding. This flexibility in processing enables the production of complex and precise parts according to specific design requirements.

SNCM439 Steel
Regarding its heat treatment response, JIS SNC21 can be effectively heat-treated using methods like quenching and tempering. Quenching rapidly cools the steel, increasing its hardness, while tempering reduces the brittleness that may result from quenching and improves the toughness and ductility. This ability to optimize its properties through heat treatment makes it a versatile choice for different applications.
In the industrial sector, JIS SNC21 is widely used in the manufacturing of machinery parts, especially those that require a combination of strength, toughness, and wear resistance. It is commonly employed in the automotive industry for components such as gears, shafts, and engine parts. In the construction of machinery and equipment, it plays a crucial role in ensuring the reliability and durability of the structures. Overall, JIS SNC21 is a valuable alloy steel that meets the requirements of various industries, contributing to the production of high-quality and reliable products.