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S44700 Stainless Steel vs. EN 1.4125 Stainless Steel

Both S44700 stainless steel and EN 1.4125 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 85% 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 S44700 stainless steel and the bottom bar is EN 1.4125 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
250
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 23
19
Fatigue Strength, MPa 300
300
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 82
77
Shear Strength, MPa 380
500
Tensile Strength: Ultimate (UTS), MPa 600
800
Tensile Strength: Yield (Proof), MPa 450
470

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 460
390
Maximum Temperature: Mechanical, °C 1100
870
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 11
10

Otherwise Unclassified Properties

Base Metal Price, % relative 18
9.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.6
2.3
Embodied Energy, MJ/kg 49
32
Embodied Water, L/kg 180
120

Common Calculations

PREN (Pitting Resistance) 42
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
130
Resilience: Unit (Modulus of Resilience), kJ/m3 480
570
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
29
Strength to Weight: Bending, points 20
25
Thermal Shock Resistance, points 19
29

Alloy Composition

Carbon (C), % 0 to 0.010
1.0 to 1.2
Chromium (Cr), % 28 to 30
16 to 18
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 64.9 to 68.5
78 to 82.7
Manganese (Mn), % 0 to 0.3
0 to 1.0
Molybdenum (Mo), % 3.5 to 4.2
0.4 to 0.8
Nickel (Ni), % 0 to 0.15
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.2
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.015