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S21460 Stainless Steel vs. ASTM A369 Grade FP21

Both S21460 stainless steel and ASTM A369 grade FP21 are iron alloys. Both are furnished in the annealed condition. They have 64% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is S21460 stainless steel and the bottom bar is ASTM A369 grade FP21.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
140
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 46
20
Fatigue Strength, MPa 390
160
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
74
Shear Strength, MPa 580
300
Tensile Strength: Ultimate (UTS), MPa 830
470
Tensile Strength: Yield (Proof), MPa 430
240

Thermal Properties

Latent Heat of Fusion, J/g 290
260
Maximum Temperature: Mechanical, °C 920
470
Melting Completion (Liquidus), °C 1380
1470
Melting Onset (Solidus), °C 1330
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 18
13

Otherwise Unclassified Properties

Base Metal Price, % relative 14
4.0
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 3.0
1.8
Embodied Energy, MJ/kg 43
23
Embodied Water, L/kg 160
61

Common Calculations

PREN (Pitting Resistance) 25
6.2
Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
80
Resilience: Unit (Modulus of Resilience), kJ/m3 460
150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30
17
Strength to Weight: Bending, points 26
17
Thermal Shock Resistance, points 17
14

Alloy Composition

Carbon (C), % 0 to 0.12
0.050 to 0.15
Chromium (Cr), % 17 to 19
2.7 to 3.4
Iron (Fe), % 57.3 to 63.7
94.3 to 96.2
Manganese (Mn), % 14 to 16
0.3 to 0.6
Molybdenum (Mo), % 0
0.8 to 1.1
Nickel (Ni), % 5.0 to 6.0
0
Nitrogen (N), % 0.35 to 0.5
0
Phosphorus (P), % 0 to 0.060
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.025