AISI 4130 Steel, water quenched 855°C (1570°F), 480°C (900°F) temper, 13 mm (0.5 in.) round

Subcategory: AISI 4000 Series Steel; Ferrous Metal; Low Alloy Steel; Medium Carbon Steel; Metal

Key Words: alloy steels, UNS G41300, AMS 6350, AMS 6356, AMS 6360, AMS 6361, AMS 6372, AMS 6370, AMS 6371, AMS 6373, ASTM A322, ASTM A331, ASTM A505, ASTM A513, ASTM A519, ASTM A646, JIS SCM 2, JIS SCCrM 1, SS14 2225 (Sweden), B.S. CDS 110 (UK), medium carbon steels, chromium-molybdenum, chrome-moly, MIL SPEC MIL-S-16974, SAE J404, SAE J412, SAE J770, DIN 1.7218, AFNOR 25 CD 4 (France), MIL-S-6758 (flat and round bar), MIS-S-18729 ANN and NORM (sheet and plate), QQS-624 (round bar)

Component    Wt. % C 0.28 - 0.33   Cr 0.8 - 1.1   Fe 97.3 - 98.22   Mn 0.4 - 0.6   Mo 0.15 - 0.25   P Max 0.035   S Max 0.04   Si 0.15 - 0.35

Material Notes:
As quenched hardness: 51 HRC surface, 50 HRC 1/2 radius, 50 HRC center

Physical Properties	Metric	English	Comments
Density	7.85 g/cc	0.284 lb/in³
Mechanical Properties
Hardness, Brinell	331	331
Hardness, Knoop	359	359	Converted from Brinell hardness.
Hardness, Rockwell B	99	99	Converted from Brinell hardness.
Hardness, Rockwell C	36	36	Converted from Brinell hardness.
Hardness, Vickers	350	350	Converted from Brinell hardness.
Tensile Strength, Ultimate	1145 MPa	166000 psi
Tensile Strength, Yield	1110 MPa	161000 psi
Elongation at Break	16.4 %	16.4 %	in 50 mm
Reduction of Area	61 %	61 %
Modulus of Elasticity	205 GPa	29700 ksi	Typical for steel
Bulk Modulus	140 GPa	20300 ksi	Typical for steel
Poisson's Ratio	0.29	0.29	Calculated
Machinability	70 %	70 %	annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.
Shear Modulus	80 GPa	11600 ksi	Typical for steel
Electrical Properties
Electrical Resistivity	2.23e-005 ohm-cm	2.23e-005 ohm-cm	specimen hardened and tempered; 20°C (68°F)
Electrical Resistivity at Elevated Temperature	0.0001103 ohm-cm	0.0001103 ohm-cm	specimen hardened and tempered; 800°C (1470°F)
Electrical Resistivity at Elevated Temperature	0.0001171 ohm-cm	0.0001171 ohm-cm	specimen hardened and tempered; 1000°C (1830°F)
Electrical Resistivity at Elevated Temperature	0.0001222 ohm-cm	0.0001222 ohm-cm	specimen hardened and tempered; 1200°C (2192°F)
Electrical Resistivity at Elevated Temperature	2.71e-005 ohm-cm	2.71e-005 ohm-cm	specimen hardened and tempered; 100°C (212°F)
Electrical Resistivity at Elevated Temperature	3.42e-005 ohm-cm	3.42e-005 ohm-cm	specimen hardened and tempered; 200°C (390°F)
Electrical Resistivity at Elevated Temperature	5.29e-005 ohm-cm	5.29e-005 ohm-cm	specimen hardened and tempered; 400°C (750°F)
Electrical Resistivity at Elevated Temperature	7.86e-005 ohm-cm	7.86e-005 ohm-cm	specimen hardened and tempered; 600°C (1110°F)
Thermal Properties
Specific Heat Capacity	0.477 J/g-°C	0.114 BTU/lb-°F	50-100°C
Specific Heat Capacity at Elevated Temperature	0.523 J/g-°C	0.125 BTU/lb-°F	150-200°C
Specific Heat Capacity at Elevated Temperature	0.837 J/g-°C	0.2 BTU/lb-°F	750-800°C
Thermal Conductivity	42.7 W/m-K	296 BTU-in/hr-ft²-°F	100°C
Thermal Conductivity at Elevated Temperature	30.1 W/m-K	209 BTU-in/hr-ft²-°F	1200°C
Thermal Conductivity at Elevated Temperature	40.7 W/m-K	282 BTU-in/hr-ft²-°F	300°C

References for this datasheet.