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EN 1.4318 Stainless Steel vs. SAE-AISI 9310 Steel

Both EN 1.4318 stainless steel and SAE-AISI 9310 steel are iron alloys. They have 79% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4318 stainless steel and the bottom bar is SAE-AISI 9310 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
540 to 610
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 44
17 to 19
Fatigue Strength, MPa 340
300 to 390
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 520
510 to 570
Tensile Strength: Ultimate (UTS), MPa 740
820 to 910
Tensile Strength: Yield (Proof), MPa 380
450 to 570

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 910
440
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
48
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 13
4.4
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.8
1.8
Embodied Energy, MJ/kg 39
24
Embodied Water, L/kg 130
57

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 280
120 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 360
540 to 860
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
29 to 32
Strength to Weight: Bending, points 23
25 to 27
Thermal Diffusivity, mm2/s 4.0
13
Thermal Shock Resistance, points 17
24 to 27

Alloy Composition

Carbon (C), % 0 to 0.030
0.080 to 0.13
Chromium (Cr), % 16.5 to 18.5
1.0 to 1.4
Iron (Fe), % 70.2 to 77.4
93.8 to 95.2
Manganese (Mn), % 0 to 2.0
0.45 to 0.65
Molybdenum (Mo), % 0
0.080 to 0.15
Nickel (Ni), % 6.0 to 8.0
3.0 to 3.5
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.045
0 to 0.015
Silicon (Si), % 0 to 1.0
0.2 to 0.35
Sulfur (S), % 0 to 0.015
0 to 0.012