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AISI 201LN Stainless Steel vs. R30556 Alloy

Both AISI 201LN stainless steel and R30556 alloy are iron alloys. They have 52% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is AISI 201LN 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, % 25 to 51
45
Fatigue Strength, MPa 340 to 540
320
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
81
Shear Strength, MPa 530 to 680
550
Tensile Strength: Ultimate (UTS), MPa 740 to 1060
780
Tensile Strength: Yield (Proof), MPa 350 to 770
350

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 880
1100
Melting Completion (Liquidus), °C 1410
1420
Melting Onset (Solidus), °C 1370
1330
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 15
11
Thermal Expansion, µm/m-K 17
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 12
70
Density, g/cm3 7.7
8.4
Embodied Carbon, kg CO2/kg material 2.6
8.7
Embodied Energy, MJ/kg 38
130
Embodied Water, L/kg 140
300

Common Calculations

PREN (Pitting Resistance) 20
40
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230 to 310
290
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 1520
290
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 27 to 38
26
Strength to Weight: Bending, points 24 to 30
22
Thermal Diffusivity, mm2/s 4.0
2.9
Thermal Shock Resistance, points 16 to 23
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), % 16 to 17.5
21 to 23
Cobalt (Co), % 0
16 to 21
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 67.9 to 73.5
20.4 to 38.2
Lanthanum (La), % 0
0.0050 to 0.1
Manganese (Mn), % 6.4 to 7.5
0.5 to 2.0
Molybdenum (Mo), % 0
2.5 to 4.0
Nickel (Ni), % 4.0 to 5.0
19 to 22.5
Niobium (Nb), % 0
0 to 0.3
Nitrogen (N), % 0.1 to 0.25
0.1 to 0.3
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
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), % 0
2.0 to 3.5
Zinc (Zn), % 0
0.0010 to 0.1