JIS S45C
JIS S45C
JIS S45C
JIS S45C

JIS S45C

S45C is a medium carbon steel with a chemical composition of: - Carbon (C): 0.42%-0.50% - Silicon (Si): 0.15%-0.35% - Manganese (Mn): 0.60%-0.90% - Phosphorus (P): 0.030% max - Sulfur (S): 0.035% max

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Product Introduction

JIS S45C is a Japanese standard for carbon steel grade that is widely used in various industrial applications. It is a medium carbon steel grade with a carbon content of 0.42-0.48%, and it has good wear resistance, toughness, and ductility. JIS S45C steel is versatile and commonly used in manufacturing machinery parts, forging, and die-cutting industries, as well as in the automotive and construction industries. It is often used for shafts, gears, sprockets, and other components that require high strength and durability.

Here are a few of the product specifications:

1. Chemical composition: C: 0.42-0.48, Si: 0.15-0.35, Mn: 0.6-0.9, P≤0.03, S≤0.035.

2. Mechanical properties: tensile strength ≥686 MPa, yield strength ≥490 MPa, elongation ≥17%.

3. Machining performance: easy to cut, forge and quench, surface hardness can reach 50-55 HRC.

4. Application: It can be used to manufacture various mechanical parts and components, such as shafts, gears, dowel, bolts, etc.

JIS S45C Mild Steel

Standard Compare

JUTHA WAN	JIS	AISI/SAE	DIN
S45C	S45C	1045	1.119 (CK45)

1045 Chemical composition

standard	grade	C	Si	Mn	P	S	Cr
ASTM A29	1045	0.43-0.50	——	0.60-0.90	≤0.04	≤0.05	——
EN 10083-2	C45	0.42-0.50	≤0.04	0.50-0.90	≤0.03	≤0.035	≤0.4
EN 10083-2	1.1191	0.42-0.50	≤0.04	0.50-0.90	≤0.03	≤0.035	≤0.4
JIS G4051	S45C	0.42-0.48	0.15-0.35	0.60-0.90	≤0.03	≤0.035	——

1045 Physical properties

density，g/cm3	7.87
melting point°C	1495
elasticity modulus，psi	29 x 10^6
coefficient of thermal expansion，68-212˚F，/˚F	6.39 x 10^-6
heat conductivity，Btu/ft hr ˚F	30
specific heat，Btu/lb ˚F	0.116
Resistivity, microohms	6.42

1045 Mechanical properties

sectional dimension mm	≤ 16	17 – 40	41 – 100
strength of extension Mpa	700-850	6500-800	630-780
yield strength Mpa	≥ 500	≥430	≥ 370
50mm elongation %	≥ 14	≥ 16	≥ 17
Impact charpy J	≥ 30	≥ 30	≥ 30
hardness HB	210-245	195-235	185-230

Note: 820 water quenched ØC -850 øC or oil quenched at 830 °C-860°C and tempered between 540 °C- 680 °C

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JIS S45C Mild Steel

S45C Hot Rolled Round Bars And Forged Round Bars