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SAE-AISI 4340M Steel vs. EN 1.4567 Stainless Steel

Both SAE-AISI 4340M steel and EN 1.4567 stainless steel are iron alloys. They have 71% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4340M steel and the bottom bar is EN 1.4567 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 710
190 to 240
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 6.0
22 to 51
Fatigue Strength, MPa 690
190 to 260
Impact Strength: V-Notched Charpy, J 18
91 to 110
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Shear Strength, MPa 1360
390 to 490
Tensile Strength: Ultimate (UTS), MPa 2340
550 to 780
Tensile Strength: Yield (Proof), MPa 1240
200 to 390

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Mechanical, °C 430
930
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 38
11
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.9
3.1
Embodied Energy, MJ/kg 26
43
Embodied Water, L/kg 55
150

Common Calculations

PREN (Pitting Resistance) 2.2
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
150 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 4120
100 to 400
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 84
19 to 27
Strength to Weight: Bending, points 51
19 to 24
Thermal Diffusivity, mm2/s 10
3.0
Thermal Shock Resistance, points 70
12 to 17

Alloy Composition

Carbon (C), % 0.38 to 0.43
0 to 0.040
Chromium (Cr), % 0.7 to 1.0
17 to 19
Copper (Cu), % 0
3.0 to 4.0
Iron (Fe), % 93.3 to 94.8
63.3 to 71.5
Manganese (Mn), % 0.65 to 0.9
0 to 2.0
Molybdenum (Mo), % 0.35 to 0.45
0
Nickel (Ni), % 1.7 to 2.0
8.5 to 10.5
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.012
0 to 0.045
Silicon (Si), % 1.5 to 1.8
0 to 1.0
Sulfur (S), % 0 to 0.012
0 to 0.015
Vanadium (V), % 0.050 to 0.1
0