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S31254 Stainless Steel vs. S44700 Stainless Steel

Both S31254 stainless steel and S44700 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 78% of their average alloy composition in common. There are 30 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 S31254 stainless steel and the bottom bar is S44700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
200
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 40
23
Fatigue Strength, MPa 290
300
Poisson's Ratio 0.28
0.27
Reduction in Area, % 56
45
Shear Modulus, GPa 80
82
Shear Strength, MPa 490
380
Tensile Strength: Ultimate (UTS), MPa 720
600
Tensile Strength: Yield (Proof), MPa 330
450

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
460
Maximum Temperature: Mechanical, °C 1090
1100
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 460
480
Thermal Expansion, µm/m-K 17
11

Otherwise Unclassified Properties

Base Metal Price, % relative 28
18
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 5.5
3.6
Embodied Energy, MJ/kg 74
49
Embodied Water, L/kg 190
180

Common Calculations

PREN (Pitting Resistance) 44
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
120
Resilience: Unit (Modulus of Resilience), kJ/m3 270
480
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25
21
Strength to Weight: Bending, points 22
20
Thermal Shock Resistance, points 15
19

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.010
Chromium (Cr), % 19.5 to 20.5
28 to 30
Copper (Cu), % 0.5 to 1.0
0 to 0.15
Iron (Fe), % 51.4 to 56.3
64.9 to 68.5
Manganese (Mn), % 0 to 1.0
0 to 0.3
Molybdenum (Mo), % 6.0 to 6.5
3.5 to 4.2
Nickel (Ni), % 17.5 to 18.5
0 to 0.15
Nitrogen (N), % 0.18 to 0.22
0 to 0.020
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 0.8
0 to 0.2
Sulfur (S), % 0 to 0.010
0 to 0.020