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EN 1.4434 Stainless Steel vs. S39277 Stainless Steel

Both EN 1.4434 stainless steel and S39277 stainless steel are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4434 stainless steel and the bottom bar is S39277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
250
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 41
28
Fatigue Strength, MPa 270
480
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 79
80
Shear Strength, MPa 450
600
Tensile Strength: Ultimate (UTS), MPa 660
930
Tensile Strength: Yield (Proof), MPa 310
660

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 980
1100
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 21
23
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.2
4.2
Embodied Energy, MJ/kg 57
59
Embodied Water, L/kg 160
180

Common Calculations

PREN (Pitting Resistance) 32
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
240
Resilience: Unit (Modulus of Resilience), kJ/m3 240
1070
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
33
Strength to Weight: Bending, points 21
27
Thermal Diffusivity, mm2/s 4.0
4.2
Thermal Shock Resistance, points 15
26

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.025
Chromium (Cr), % 16.5 to 19.5
24 to 26
Copper (Cu), % 0
1.2 to 2.0
Iron (Fe), % 59.2 to 69.9
56.8 to 64.3
Manganese (Mn), % 0 to 2.0
0 to 0.8
Molybdenum (Mo), % 3.0 to 4.0
3.0 to 4.0
Nickel (Ni), % 10.5 to 14
6.5 to 8.0
Nitrogen (N), % 0.1 to 0.2
0.23 to 0.33
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.015
0 to 0.0020
Tungsten (W), % 0
0.8 to 1.2