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EN 1.4971 Stainless Steel vs. R30556 Alloy

Both EN 1.4971 stainless steel and R30556 alloy are iron alloys. They have a very high 96% 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 1.4971 stainless steel and the bottom bar is R30556 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 34
45
Fatigue Strength, MPa 270
320
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
81
Shear Strength, MPa 530
550
Tensile Strength: Ultimate (UTS), MPa 800
780
Tensile Strength: Yield (Proof), MPa 340
350

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 570
450
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1410
1330
Specific Heat Capacity, J/kg-K 450
450
Thermal Conductivity, W/m-K 13
11
Thermal Expansion, µm/m-K 15
15

Otherwise Unclassified Properties

Base Metal Price, % relative 70
70
Density, g/cm3 8.4
8.4
Embodied Carbon, kg CO2/kg material 7.6
8.7
Embodied Energy, MJ/kg 110
130
Embodied Water, L/kg 300
300

Common Calculations

PREN (Pitting Resistance) 38
40
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
290
Resilience: Unit (Modulus of Resilience), kJ/m3 280
290
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 26
26
Strength to Weight: Bending, points 23
22
Thermal Diffusivity, mm2/s 3.4
2.9
Thermal Shock Resistance, points 19
18

Alloy Composition

Aluminum (Al), % 0
0.1 to 0.5
Boron (B), % 0
0 to 0.020
Carbon (C), % 0.080 to 0.16
0.050 to 0.15
Chromium (Cr), % 20 to 22.5
21 to 23
Cobalt (Co), % 18.5 to 21
16 to 21
Iron (Fe), % 24.3 to 37.1
20.4 to 38.2
Lanthanum (La), % 0
0.0050 to 0.1
Manganese (Mn), % 0 to 2.0
0.5 to 2.0
Molybdenum (Mo), % 2.5 to 3.5
2.5 to 4.0
Nickel (Ni), % 19 to 21
19 to 22.5
Niobium (Nb), % 0.75 to 1.3
0 to 0.3
Nitrogen (N), % 0.1 to 0.2
0.1 to 0.3
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0.2 to 0.8
Sulfur (S), % 0 to 0.015
0 to 0.015
Tantalum (Ta), % 0
0.3 to 1.3
Tungsten (W), % 2.0 to 3.0
2.0 to 3.5
Zinc (Zn), % 0
0.0010 to 0.1