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AISI 310 Stainless Steel vs. S43940 Stainless Steel

Both AISI 310 stainless steel and S43940 stainless steel are iron alloys. They have 72% of their average alloy composition in common.

For each property being compared, the top bar is AISI 310 stainless steel and the bottom bar is S43940 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 220
160
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34 to 45
21
Fatigue Strength, MPa 240 to 280
180
Poisson's Ratio 0.27
0.28
Rockwell B Hardness 82
76
Shear Modulus, GPa 78
77
Shear Strength, MPa 420 to 470
310
Tensile Strength: Ultimate (UTS), MPa 600 to 710
490
Tensile Strength: Yield (Proof), MPa 260 to 350
280

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Maximum Temperature: Corrosion, °C 440
540
Maximum Temperature: Mechanical, °C 1040
890
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
25
Thermal Expansion, µm/m-K 15
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 25
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.3
2.6
Embodied Energy, MJ/kg 61
38
Embodied Water, L/kg 190
120

Common Calculations

PREN (Pitting Resistance) 25
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 220
86
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 310
200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 25
18
Strength to Weight: Bending, points 20 to 22
18
Thermal Diffusivity, mm2/s 3.9
6.8
Thermal Shock Resistance, points 14 to 17
18

Alloy Composition

Carbon (C), % 0 to 0.25
0 to 0.030
Chromium (Cr), % 24 to 26
17.5 to 18.5
Iron (Fe), % 48.2 to 57
78.2 to 82.1
Manganese (Mn), % 0 to 2.0
0 to 1.0
Nickel (Ni), % 19 to 22
0
Niobium (Nb), % 0
0.3 to 0.6
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.1 to 0.6