Materials / Steel
Steel AISI 4340 (quenched and tempered) strength, stiffness, density and thermal properties, with their source.
A bracket in Steel AISI 4340, brushed finish.
Mechanical Yield strength 1,035 MPa Ultimate tensile strength 1,140 MPa Elongation at break 18 % Young's modulus (stiffness) 200 GPa Density 7,840 kg/m³ Strength to weight 132 kN·m/kg Stiffness to weight 25.5 MN·m/kg Poisson's ratio 0.32 Shear modulus 75.7 GPa Bulk modulus 185 GPa Speed of sound 5,049 m/s
1k 10k 0.1 1 10 100 Density (kg/m³) Young's modulus (GPa) Plastic PLA Plastic PETG Plastic ABS Plastic TPU Plastic Nylon Wood Aluminum Steel Iron Titanium Steel AISI 1018 Stainless Steel 304 Stainless Steel 316 Aluminum 6061-T6 Aluminum 7075-T6 Brass C360 Copper C110 Copper C10100 Copper C12200 Glass Steel AISI 1045 Steel A992 Stainless Steel 303 Stainless Steel 17-4PH Aluminum 2024-T351 Aluminum 5052-H32 Aluminum 7050-T7451 Titanium Ti-6Al-4V Brass C260 Nickel Inconel 718 Magnesium AZ31B-H24 Zinc Zamak 3 Plastic ABS (bulk/injection) Plastic Polycarbonate Plastic POM/Acetal Plastic Nylon PA6 Plastic Nylon PA66 Plastic PEEK Plastic UHMWPE Plastic HDPE Plastic Polypropylene Plastic PMMA FDM ASA FDM Polycarbonate FDM PAHT-CF FDM HIPS SLA Resin Standard SLA Resin Tough 2000 SLS PA12 Nylon DMLS AlSi10Mg Aluminum DMLS Ti-6Al-4V ELI Titanium DMLS 316L Stainless Steel DMLS 17-4PH Stainless Steel Concrete PCB Laminate FR-4 Silicon Ceramic Alumina 96% Ceramic Aluminum Nitride Aluminum A380 Aluminum 6063-T6 Aluminum 1100-O Aluminum 3003-O Aluminum ADC12 Magnesium AZ91D Solder SAC305 Plastic PBT GF30 Plastic PPS GF40 Plastic LCP GF30 Steel AISI 4340 Stiffness against densityHigher and further left: stiffer for its weight 1k 10k 10 100 1k Density (kg/m³) Yield strength (MPa) Plastic PLA Plastic PETG Plastic ABS Plastic TPU Plastic Nylon Rubber Wood Aluminum Steel Iron Titanium Steel AISI 1018 Stainless Steel 304 Stainless Steel 316 Aluminum 6061-T6 Aluminum 7075-T6 Brass C360 Copper C110 Copper C10100 Copper C12200 Glass Steel AISI 1045 Steel A992 Stainless Steel 303 Stainless Steel 17-4PH Aluminum 2024-T351 Aluminum 5052-H32 Aluminum 7050-T7451 Titanium Ti-6Al-4V Brass C260 Nickel Inconel 718 Magnesium AZ31B-H24 Zinc Zamak 3 Plastic ABS (bulk/injection) Plastic Polycarbonate Plastic POM/Acetal Plastic Nylon PA6 Plastic Nylon PA66 Plastic PEEK Plastic PTFE Plastic UHMWPE Plastic HDPE Plastic Polypropylene Plastic PMMA FDM ASA FDM Polycarbonate FDM PAHT-CF FDM HIPS SLA Resin Standard SLA Resin Tough 2000 SLA Resin Elastic 50A SLS PA12 Nylon DMLS AlSi10Mg Aluminum DMLS Ti-6Al-4V ELI Titanium DMLS 316L Stainless Steel DMLS 17-4PH Stainless Steel Brick PCB Laminate FR-4 Silicon Ceramic Alumina 96% Aluminum A380 Aluminum 6063-T6 Aluminum 1100-O Aluminum 3003-O Aluminum ADC12 Magnesium AZ91D Solder SAC305 Plastic PBT GF30 Plastic PPS GF40 Plastic LCP GF30 Steel AISI 4340 Strength against densityHigher and further left: stronger for its weight
Thermal Thermal conductivity 37.5 W/m·K Thermal expansion mean 11.3 µm/m·K 100 mm part over a 50 °C swing 56.5 µm growth Specific heat 448 J/kg·K Heats up and cools (diffusivity) 10.7 mm²/s Thermal shock resistance 11,678 W/m
1k 10k 0.1 1 10 100 Density (kg/m³) Thermal conductivity (W/m·K) Plastic PLA Plastic PETG Plastic ABS Plastic Nylon Rubber Wood Aluminum Steel Iron Titanium Steel AISI 1018 Stainless Steel 304 Stainless Steel 316 Aluminum 6061-T6 Aluminum 7075-T6 Brass C360 Copper C110 Copper C10100 Copper C12200 Glass Steel AISI 1045 Steel A992 Stainless Steel 303 Stainless Steel 17-4PH Aluminum 2024-T351 Aluminum 5052-H32 Aluminum 7050-T7451 Titanium Ti-6Al-4V Brass C260 Nickel Inconel 718 Magnesium AZ31B-H24 Zinc Zamak 3 Plastic ABS (bulk/injection) Plastic Polycarbonate Plastic POM/Acetal Plastic Nylon PA6 Plastic Nylon PA66 Plastic PEEK Plastic PTFE Plastic UHMWPE Plastic HDPE Plastic Polypropylene Plastic PMMA FDM ASA FDM Polycarbonate FDM HIPS SLA Resin Standard DMLS AlSi10Mg Aluminum DMLS Ti-6Al-4V ELI Titanium DMLS 316L Stainless Steel DMLS 17-4PH Stainless Steel Concrete Brick PCB Laminate FR-4 Silicon Ceramic Alumina 96% Ceramic Aluminum Nitride Aluminum A380 Aluminum 6063-T6 Aluminum 1100-O Aluminum 3003-O Aluminum ADC12 Magnesium AZ91D Solder SAC305 Plastic PBT GF30 Plastic PPS GF40 Plastic LCP GF30 Steel AISI 4340 Thermal conductivity against densityHigher and further left: spreads more heat for its weight 0.1 1 10 100 10 100 Thermal conductivity (W/m·K) Thermal expansion (µm/m·K) Plastic PETG Plastic ABS Plastic Nylon Wood Aluminum Steel Iron Titanium Steel AISI 1018 Stainless Steel 304 Stainless Steel 316 Aluminum 6061-T6 Aluminum 7075-T6 Brass C360 Copper C110 Copper C10100 Copper C12200 Glass Steel AISI 1045 Steel A992 Stainless Steel 303 Stainless Steel 17-4PH Aluminum 2024-T351 Aluminum 5052-H32 Aluminum 7050-T7451 Titanium Ti-6Al-4V Brass C260 Nickel Inconel 718 Magnesium AZ31B-H24 Zinc Zamak 3 Plastic ABS (bulk/injection) Plastic Polycarbonate Plastic POM/Acetal Plastic Nylon PA6 Plastic Nylon PA66 Plastic PEEK Plastic PTFE Plastic UHMWPE Plastic HDPE Plastic Polypropylene Plastic PMMA FDM ASA FDM Polycarbonate FDM HIPS SLA Resin Standard DMLS AlSi10Mg Aluminum DMLS Ti-6Al-4V ELI Titanium DMLS 316L Stainless Steel DMLS 17-4PH Stainless Steel Concrete Brick Plywood PCB Laminate FR-4 Silicon Ceramic Alumina 96% Ceramic Aluminum Nitride Aluminum A380 Aluminum 6063-T6 Aluminum 1100-O Aluminum 3003-O Aluminum ADC12 Magnesium AZ91D Solder SAC305 Plastic PBT GF30 Plastic PPS GF40 Plastic LCP GF30 Steel AISI 4340 Thermal expansion against thermal conductivityLower and further right: warps less when heated
Sources 2 documents: Carpenter Technology, U.S. Department of Defense
Values for Wrought. Carpenter (Latrobe) Lescalloy 4340 VAC-ARC datasheet; mechanical row for 1100 °F temper; physical properties grade-level 1 Lescalloy 4340 VAC-ARC Data Sheet Carpenter Technology archived copy Yield strength: typical, transverse Ultimate tensile strength: typical, transverse Elongation at break: typical, transverse Density: typical Thermal conductivity: typical Thermal expansion: mean, -18 to 93 °C Specific heat: typical 2 MIL-HDBK-5J, Metallic Materials and Elements for Aerospace Vehicle Structures (2003) U.S. Department of Defense Young's modulus (stiffness): MIL-HDBK-5J design value (AISI 4340, quenched and tempered) Poisson's ratio: MIL-HDBK-5J design value (AISI 4340, quenched and tempered)
Thermal properties of Steel AISI 4340 Thermal conductivity of Steel AISI 4340 Steel AISI 4340 has a thermal conductivity of 37.5 W/m·K (21.7 BTU/hr·ft·°F). Basis: typical. Source: Carpenter Technology, Lescalloy 4340 VAC-ARC Data Sheetarchived copy .
Specific heat of Steel AISI 4340 The specific heat capacity of Steel AISI 4340 is 448 J/kg·K (0.107 BTU/lb·°F). Basis: typical. Source: Carpenter Technology, Lescalloy 4340 VAC-ARC Data Sheetarchived copy .
Coefficient of thermal expansion of Steel AISI 4340 Steel AISI 4340 expands 11.3 µm/m·K (6.28 µin/in·°F): a 100 mm part grows 56.5 µm over a 50 °C rise. Basis: mean, -18 to 93 °C. Source: Carpenter Technology, Lescalloy 4340 VAC-ARC Data Sheetarchived copy .
Thermal diffusivity of Steel AISI 4340 Computed from the conductivity, density and specific heat (k / ρc): 10.7 mm²/s, how fast a temperature change spreads through it.
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