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S44700 Stainless Steel vs. EN 1.7725 Steel

Both S44700 stainless steel and EN 1.7725 steel are iron alloys. They have 69% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is S44700 stainless steel and the bottom bar is EN 1.7725 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
250 to 300
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 23
14
Fatigue Strength, MPa 300
390 to 550
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 82
73
Tensile Strength: Ultimate (UTS), MPa 600
830 to 1000
Tensile Strength: Yield (Proof), MPa 450
610 to 860

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
440
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 11
13

Otherwise Unclassified Properties

Base Metal Price, % relative 18
2.9
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.6
1.8
Embodied Energy, MJ/kg 49
24
Embodied Water, L/kg 180
54

Common Calculations

PREN (Pitting Resistance) 42
2.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
110 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 480
980 to 1940
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
29 to 35
Strength to Weight: Bending, points 20
25 to 28
Thermal Shock Resistance, points 19
24 to 29

Alloy Composition

Carbon (C), % 0 to 0.010
0.27 to 0.34
Chromium (Cr), % 28 to 30
1.3 to 1.7
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 64.9 to 68.5
95.7 to 97.5
Manganese (Mn), % 0 to 0.3
0.6 to 1.0
Molybdenum (Mo), % 3.5 to 4.2
0.3 to 0.5
Nickel (Ni), % 0 to 0.15
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.2
0 to 0.6
Sulfur (S), % 0 to 0.020
0 to 0.030
Vanadium (V), % 0
0.050 to 0.15