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EN 1.7725 Steel vs. EN 1.4527 Stainless Steel

Both EN 1.7725 steel and EN 1.4527 stainless steel are iron alloys. They have 46% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.7725 steel and the bottom bar is EN 1.4527 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250 to 300
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 14
40
Fatigue Strength, MPa 390 to 550
170
Impact Strength: V-Notched Charpy, J 34 to 35
67
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 830 to 1000
480
Tensile Strength: Yield (Proof), MPa 610 to 860
190

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 440
1100
Melting Completion (Liquidus), °C 1460
1410
Melting Onset (Solidus), °C 1420
1360
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
15
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
32
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 1.8
5.6
Embodied Energy, MJ/kg 24
78
Embodied Water, L/kg 54
210

Common Calculations

PREN (Pitting Resistance) 2.8
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 130
150
Resilience: Unit (Modulus of Resilience), kJ/m3 980 to 1940
95
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29 to 35
17
Strength to Weight: Bending, points 25 to 28
17
Thermal Diffusivity, mm2/s 11
4.0
Thermal Shock Resistance, points 24 to 29
12

Alloy Composition

Carbon (C), % 0.27 to 0.34
0 to 0.060
Chromium (Cr), % 1.3 to 1.7
19 to 22
Copper (Cu), % 0
3.0 to 4.0
Iron (Fe), % 95.7 to 97.5
37.4 to 48.5
Manganese (Mn), % 0.6 to 1.0
0 to 1.5
Molybdenum (Mo), % 0.3 to 0.5
2.0 to 3.0
Nickel (Ni), % 0
27.5 to 30.5
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.050 to 0.15
0