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EN 1.4062 Stainless Steel vs. SAE-AISI 4340M Steel

Both EN 1.4062 stainless steel and SAE-AISI 4340M steel are iron alloys. They have 78% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4062 stainless steel and the bottom bar is SAE-AISI 4340M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23 to 34
6.0
Fatigue Strength, MPa 410 to 420
690
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
72
Shear Strength, MPa 510
1360
Tensile Strength: Ultimate (UTS), MPa 770 to 800
2340
Tensile Strength: Yield (Proof), MPa 530 to 600
1240

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Mechanical, °C 1030
430
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
38
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 12
3.9
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.6
1.9
Embodied Energy, MJ/kg 37
26
Embodied Water, L/kg 150
55

Common Calculations

PREN (Pitting Resistance) 27
2.2
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170 to 230
120
Resilience: Unit (Modulus of Resilience), kJ/m3 690 to 910
4120
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 29
84
Strength to Weight: Bending, points 24 to 25
51
Thermal Diffusivity, mm2/s 4.0
10
Thermal Shock Resistance, points 21 to 22
70

Alloy Composition

Carbon (C), % 0 to 0.030
0.38 to 0.43
Chromium (Cr), % 21.5 to 24
0.7 to 1.0
Iron (Fe), % 69.3 to 77.3
93.3 to 94.8
Manganese (Mn), % 0 to 2.0
0.65 to 0.9
Molybdenum (Mo), % 0 to 0.45
0.35 to 0.45
Nickel (Ni), % 1.0 to 2.9
1.7 to 2.0
Nitrogen (N), % 0.16 to 0.28
0
Phosphorus (P), % 0 to 0.040
0 to 0.012
Silicon (Si), % 0 to 1.0
1.5 to 1.8
Sulfur (S), % 0 to 0.010
0 to 0.012
Vanadium (V), % 0
0.050 to 0.1