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EN 1.7725 Steel vs. S30601 Stainless Steel

Both EN 1.7725 steel and S30601 stainless steel are iron alloys. They have 61% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.7725 steel and the bottom bar is S30601 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250 to 300
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 14
37
Fatigue Strength, MPa 390 to 550
250
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Tensile Strength: Ultimate (UTS), MPa 830 to 1000
660
Tensile Strength: Yield (Proof), MPa 610 to 860
300

Thermal Properties

Latent Heat of Fusion, J/g 250
370
Maximum Temperature: Mechanical, °C 440
950
Melting Completion (Liquidus), °C 1460
1360
Melting Onset (Solidus), °C 1420
1310
Specific Heat Capacity, J/kg-K 470
500
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
20
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 1.8
3.9
Embodied Energy, MJ/kg 24
55
Embodied Water, L/kg 54
150

Common Calculations

PREN (Pitting Resistance) 2.8
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 130
200
Resilience: Unit (Modulus of Resilience), kJ/m3 980 to 1940
230
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29 to 35
24
Strength to Weight: Bending, points 25 to 28
22
Thermal Shock Resistance, points 24 to 29
16

Alloy Composition

Carbon (C), % 0.27 to 0.34
0 to 0.015
Chromium (Cr), % 1.3 to 1.7
17 to 18
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 95.7 to 97.5
56.9 to 60.5
Manganese (Mn), % 0.6 to 1.0
0.5 to 0.8
Molybdenum (Mo), % 0.3 to 0.5
0 to 0.2
Nickel (Ni), % 0
17 to 18
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.6
5.0 to 5.6
Sulfur (S), % 0 to 0.030
0 to 0.013
Vanadium (V), % 0.050 to 0.15
0