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S31730 Stainless Steel vs. AISI 305 Stainless Steel

Both S31730 stainless steel and AISI 305 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S31730 stainless steel and the bottom bar is AISI 305 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
170 to 220
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
34 to 45
Fatigue Strength, MPa 170
210 to 280
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 370
400 to 470
Tensile Strength: Ultimate (UTS), MPa 540
580 to 710
Tensile Strength: Yield (Proof), MPa 200
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 990
540
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Base Metal Price, % relative 24
16
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 4.6
3.2
Embodied Energy, MJ/kg 63
45
Embodied Water, L/kg 180
150

Common Calculations

PREN (Pitting Resistance) 30
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
200 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 99
130 to 320
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
20 to 25
Strength to Weight: Bending, points 18
20 to 23
Thermal Shock Resistance, points 12
13 to 15

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.12
Chromium (Cr), % 17 to 19
17 to 19
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 52.4 to 61
65.1 to 72.5
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 15 to 16.5
10.5 to 13
Nitrogen (N), % 0 to 0.045
0
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.010
0 to 0.030