MakeItFrom.com
Menu (ESC)

S31727 Stainless Steel vs. R30556 Alloy

Both S31727 stainless steel and R30556 alloy are iron alloys. Both are furnished in the annealed condition. They have 68% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is S31727 stainless steel and the bottom bar is R30556 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 40
45
Fatigue Strength, MPa 240
320
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
81
Shear Strength, MPa 430
550
Tensile Strength: Ultimate (UTS), MPa 630
780
Tensile Strength: Yield (Proof), MPa 270
350

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 1010
1100
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1390
1330
Specific Heat Capacity, J/kg-K 470
450
Thermal Expansion, µm/m-K 16
15

Otherwise Unclassified Properties

Base Metal Price, % relative 24
70
Density, g/cm3 8.0
8.4
Embodied Carbon, kg CO2/kg material 4.7
8.7
Embodied Energy, MJ/kg 64
130
Embodied Water, L/kg 180
300

Common Calculations

PREN (Pitting Resistance) 35
40
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
290
Resilience: Unit (Modulus of Resilience), kJ/m3 190
290
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 22
26
Strength to Weight: Bending, points 20
22
Thermal Shock Resistance, points 14
18

Alloy Composition

Aluminum (Al), % 0
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), % 17.5 to 19
21 to 23
Cobalt (Co), % 0
16 to 21
Copper (Cu), % 2.8 to 4.0
0
Iron (Fe), % 53.7 to 61.3
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), % 3.8 to 4.5
2.5 to 4.0
Nickel (Ni), % 14.5 to 16.5
19 to 22.5
Niobium (Nb), % 0
0 to 0.3
Nitrogen (N), % 0.15 to 0.21
0.1 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 1.0
0.2 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.015
Tantalum (Ta), % 0
0.3 to 1.3
Tungsten (W), % 0
2.0 to 3.5
Zinc (Zn), % 0
0.0010 to 0.1