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EN 1.7706 Steel vs. EN 1.4527 Stainless Steel

Both EN 1.7706 steel and EN 1.4527 stainless steel are iron alloys. They have 47% 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 1.7706 steel and the bottom bar is EN 1.4527 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17
40
Fatigue Strength, MPa 330
170
Impact Strength: V-Notched Charpy, J 30
67
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 690
480
Tensile Strength: Yield (Proof), MPa 500
190

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Maximum Temperature: Mechanical, °C 440
1100
Melting Completion (Liquidus), °C 1470
1410
Melting Onset (Solidus), °C 1430
1360
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 40
15
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 3.7
32
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 2.3
5.6
Embodied Energy, MJ/kg 32
78
Embodied Water, L/kg 57
210

Common Calculations

PREN (Pitting Resistance) 4.7
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
150
Resilience: Unit (Modulus of Resilience), kJ/m3 670
95
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
17
Strength to Weight: Bending, points 22
17
Thermal Diffusivity, mm2/s 11
4.0
Thermal Shock Resistance, points 20
12

Alloy Composition

Carbon (C), % 0.15 to 0.2
0 to 0.060
Chromium (Cr), % 1.2 to 1.5
19 to 22
Copper (Cu), % 0 to 0.3
3.0 to 4.0
Iron (Fe), % 94.7 to 97.1
37.4 to 48.5
Manganese (Mn), % 0.5 to 0.9
0 to 1.5
Molybdenum (Mo), % 0.9 to 1.1
2.0 to 3.0
Nickel (Ni), % 0 to 0.4
27.5 to 30.5
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0.2 to 0.3
0