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EN 1.7725 Steel vs. EN 1.4477 Stainless Steel

Both EN 1.7725 steel and EN 1.4477 stainless steel are iron alloys. They have 63% of their average alloy composition in common. There are 32 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 1.7725 steel and the bottom bar is EN 1.4477 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250 to 300
270
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 14
22 to 23
Fatigue Strength, MPa 390 to 550
420 to 490
Impact Strength: V-Notched Charpy, J 34 to 35
110
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
81
Tensile Strength: Ultimate (UTS), MPa 830 to 1000
880 to 930
Tensile Strength: Yield (Proof), MPa 610 to 860
620 to 730

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 440
1100
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
13
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
20
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.8
3.7
Embodied Energy, MJ/kg 24
52
Embodied Water, L/kg 54
190

Common Calculations

PREN (Pitting Resistance) 2.8
41
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 130
180 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 980 to 1940
940 to 1290
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29 to 35
31 to 33
Strength to Weight: Bending, points 25 to 28
26 to 27
Thermal Diffusivity, mm2/s 11
3.5
Thermal Shock Resistance, points 24 to 29
23 to 25

Alloy Composition

Carbon (C), % 0.27 to 0.34
0 to 0.030
Chromium (Cr), % 1.3 to 1.7
28 to 30
Copper (Cu), % 0
0 to 0.8
Iron (Fe), % 95.7 to 97.5
56.6 to 63.6
Manganese (Mn), % 0.6 to 1.0
0.8 to 1.5
Molybdenum (Mo), % 0.3 to 0.5
1.5 to 2.6
Nickel (Ni), % 0
5.8 to 7.5
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.6
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0.050 to 0.15
0

Comparable Variants