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EN 1.4630 Stainless Steel vs. R30556 Alloy

Both EN 1.4630 stainless steel and R30556 alloy are iron alloys. Both are furnished in the annealed condition. They have 46% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4630 stainless steel and the bottom bar is R30556 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 23
45
Fatigue Strength, MPa 170
320
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
81
Shear Strength, MPa 300
550
Tensile Strength: Ultimate (UTS), MPa 480
780
Tensile Strength: Yield (Proof), MPa 250
350

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 520
450
Maximum Temperature: Mechanical, °C 800
1100
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1390
1330
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 28
11
Thermal Expansion, µm/m-K 10
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
70
Density, g/cm3 7.7
8.4
Embodied Carbon, kg CO2/kg material 2.5
8.7
Embodied Energy, MJ/kg 36
130
Embodied Water, L/kg 120
300

Common Calculations

PREN (Pitting Resistance) 15
40
Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
290
Resilience: Unit (Modulus of Resilience), kJ/m3 160
290
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 17
26
Strength to Weight: Bending, points 18
22
Thermal Diffusivity, mm2/s 7.5
2.9
Thermal Shock Resistance, points 17
18

Alloy Composition

Aluminum (Al), % 0 to 1.5
0.1 to 0.5
Boron (B), % 0
0 to 0.020
Carbon (C), % 0 to 0.030
0.050 to 0.15
Chromium (Cr), % 13 to 16
21 to 23
Cobalt (Co), % 0
16 to 21
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 77.1 to 86.7
20.4 to 38.2
Lanthanum (La), % 0
0.0050 to 0.1
Manganese (Mn), % 0 to 1.0
0.5 to 2.0
Molybdenum (Mo), % 0 to 0.5
2.5 to 4.0
Nickel (Ni), % 0 to 0.5
19 to 22.5
Niobium (Nb), % 0 to 0.5
0 to 0.3
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0 to 0.050
0 to 0.040
Silicon (Si), % 0.2 to 1.5
0.2 to 0.8
Sulfur (S), % 0 to 0.050
0 to 0.015
Tantalum (Ta), % 0
0.3 to 1.3
Titanium (Ti), % 0.15 to 0.8
0
Tungsten (W), % 0
2.0 to 3.5
Zinc (Zn), % 0
0.0010 to 0.1