Bileşimi	Ağırlıkca Yüzdesi %
C	0.42 - 0.5
Fe	98.51 - 98.98
Mn	0.6 - 0.9
P	Max 0.04
S	Max 0.05

Material Notes:
Medium-carbon steel, can be hammer forged. Can be heat treated, flame or induction hardened, but not recommended for carburizing or cyaniding. AISI cross reference for JIS S45C and KS SM45C.

Physical Properties	Metric	English	Comments
Density	7.87gr/cm3	0.284 lb/in³	Typical for steel.
Mekanik Özellikleri
Sertlik, Brinell	163	163
Sertlik, Knoop	184	184	Converted from Brinell hardness.
Sertlik, Rockwell B	84	84	Converted from Brinell hardness.
Sertlik, Vickers	170	170	Converted from Brinell hardness.
Tensile Strength, Ultimate	565 MPa	81900 psi
Tensile Strength, Yield	310 MPa	45000 psi
Elongation at Break	16 %	16 %	in 50 mm
Reduction of Area	40%	40 %
Modulus of Elasticity	200 GPa	29000 ksi	Typical for steel
Bulk Modulus	140 GPa	20300 ksi	Typical for steel.
Poisson's Ratio	0.29	0.29	Typical For Steel
Shear Modulus	80 GPa	11600 ksi	Typical for steel
Electrical Properties
Electrical Resistivity	1.62e-005 ohm-cm	1.62e-005 ohm-cm	annealed specimen; 0°C (32°F)
Electrical Resistivity at Elevated Temperature	2.23e-005 ohm-cm	2.23e-005 ohm-cm	annealed specimen; 100°C (212°F)
Thermal Properties
CTE, linear 20°C	11.2 µm/m-°C	6.22 µin/in-°F	25-100°C
CTE, linear 20°C		6.39 µin/in-°F	0-100°C
CTE, linear 20°C		6.61 µin/in-°F	25-200°C
CTE, linear 20°C		6.78 µin/in-°F	0-200°C
CTE, linear 250°C		7 µin/in-°F	25-300°C
CTE, linear 250°C		7.22 µin/in-°F	0-300°C
CTE, linear 250°C		7.5 µin/in-°F	25-400°C
CTE, linear 250°C		7.61 µin/in-°F	0-400°C
CTE, linear 500°C		7.78 µin/in-°F	0-500°C
CTE, linear 500°C		7.78 µin/in-°F	25-500°C
CTE, linear 500°C		8 µin/in-°F	25-600°C
CTE, linear 500°C		8.11 µin/in-°F	0-600°C
CTE, linear 500°C		8.22 µin/in-°F	25-700°C
CTE, linear 500°C		8.39 µin/in-°F	0-700°C
Specific Heat Capacity		0.116 BTU/lb-°F	annealed; 50-100°C (122-212°F)
Thermal Conductivity		360 BTU-in/hr-ft²-°F	Typical steel