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S31254 Stainless Steel vs. AISI 304 Stainless Steel

Both S31254 stainless steel and AISI 304 stainless steel are iron alloys. They have 83% 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 S31254 stainless steel and the bottom bar is AISI 304 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
170 to 360
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
8.0 to 43
Fatigue Strength, MPa 290
210 to 440
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
77
Shear Strength, MPa 490
400 to 690
Tensile Strength: Ultimate (UTS), MPa 720
580 to 1180
Tensile Strength: Yield (Proof), MPa 330
230 to 860

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 1090
710
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 14
16
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 28
15
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 5.5
3.0
Embodied Energy, MJ/kg 74
43
Embodied Water, L/kg 190
150

Common Calculations

PREN (Pitting Resistance) 44
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
86 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 270
140 to 1870
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25
21 to 42
Strength to Weight: Bending, points 22
20 to 32
Thermal Diffusivity, mm2/s 3.8
4.2
Thermal Shock Resistance, points 15
12 to 25

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.080
Chromium (Cr), % 19.5 to 20.5
18 to 20
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 51.4 to 56.3
66.5 to 74
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 6.0 to 6.5
0
Nickel (Ni), % 17.5 to 18.5
8.0 to 10.5
Nitrogen (N), % 0.18 to 0.22
0 to 0.1
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.8
0 to 0.75
Sulfur (S), % 0 to 0.010
0 to 0.030