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EN 1.7767 Steel vs. EN 1.4901 Stainless Steel

Both EN 1.7767 steel and EN 1.4901 stainless steel are iron alloys. They have a moderately high 92% 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 1.7767 steel and the bottom bar is EN 1.4901 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
19
Fatigue Strength, MPa 320 to 340
310
Impact Strength: V-Notched Charpy, J 46
38
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
76
Shear Strength, MPa 420 to 430
460
Tensile Strength: Ultimate (UTS), MPa 670 to 690
740
Tensile Strength: Yield (Proof), MPa 460 to 500
490

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 480
650
Melting Completion (Liquidus), °C 1470
1490
Melting Onset (Solidus), °C 1430
1450
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 40
26
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
8.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 4.5
11
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 2.4
2.8
Embodied Energy, MJ/kg 33
40
Embodied Water, L/kg 64
89

Common Calculations

PREN (Pitting Resistance) 6.4
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
120
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
620
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
26
Strength to Weight: Bending, points 22
23
Thermal Diffusivity, mm2/s 11
6.9
Thermal Shock Resistance, points 19 to 20
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 0.1 to 0.15
0.070 to 0.13
Chromium (Cr), % 2.8 to 3.3
8.5 to 9.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 93.8 to 95.8
85.8 to 89.1
Manganese (Mn), % 0.3 to 0.6
0.3 to 0.6
Molybdenum (Mo), % 0.9 to 1.1
0.3 to 0.6
Nickel (Ni), % 0 to 0.25
0 to 0.4
Niobium (Nb), % 0 to 0.070
0.040 to 0.090
Nitrogen (N), % 0 to 0.012
0.030 to 0.070
Phosphorus (P), % 0 to 0.015
0 to 0.020
Silicon (Si), % 0 to 0.15
0 to 0.5
Sulfur (S), % 0 to 0.0050
0 to 0.010
Titanium (Ti), % 0 to 0.030
0 to 0.010
Tungsten (W), % 0
1.5 to 2.0
Vanadium (V), % 0.2 to 0.3
0.15 to 0.25
Zirconium (Zr), % 0
0 to 0.010