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S31254 Stainless Steel vs. AISI 442 Stainless Steel

Both S31254 stainless steel and AISI 442 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 75% of their average alloy composition in common. There are 34 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is S31254 stainless steel and the bottom bar is AISI 442 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
23
Fatigue Strength, MPa 290
210
Poisson's Ratio 0.28
0.27
Rockwell B Hardness 84
83
Shear Modulus, GPa 80
78
Shear Strength, MPa 490
370
Tensile Strength: Ultimate (UTS), MPa 720
580
Tensile Strength: Yield (Proof), MPa 330
310

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 1090
960
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 14
22
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 28
10
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 5.5
2.3
Embodied Energy, MJ/kg 74
32
Embodied Water, L/kg 190
130

Common Calculations

PREN (Pitting Resistance) 44
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
110
Resilience: Unit (Modulus of Resilience), kJ/m3 270
250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25
21
Strength to Weight: Bending, points 22
20
Thermal Diffusivity, mm2/s 3.8
5.8
Thermal Shock Resistance, points 15
20

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.2
Chromium (Cr), % 19.5 to 20.5
18 to 23
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 51.4 to 56.3
74.1 to 82
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 6.0 to 6.5
0
Nickel (Ni), % 17.5 to 18.5
0 to 0.6
Nitrogen (N), % 0.18 to 0.22
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.040