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ASTM A369 Grade FP12 vs. EN 1.4658 Stainless Steel

Both ASTM A369 grade FP12 and EN 1.4658 stainless steel are iron alloys. They have 60% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP12 and the bottom bar is EN 1.4658 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
260
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 20
28
Fatigue Strength, MPa 170
530
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
81
Shear Strength, MPa 300
580
Tensile Strength: Ultimate (UTS), MPa 470
900
Tensile Strength: Yield (Proof), MPa 250
730

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 430
1100
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
16
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
25
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.6
4.5
Embodied Energy, MJ/kg 21
61
Embodied Water, L/kg 52
200

Common Calculations

PREN (Pitting Resistance) 2.8
49
Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
240
Resilience: Unit (Modulus of Resilience), kJ/m3 160
1280
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
32
Strength to Weight: Bending, points 17
26
Thermal Diffusivity, mm2/s 12
4.3
Thermal Shock Resistance, points 14
24

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.030
Chromium (Cr), % 0.8 to 1.3
26 to 29
Cobalt (Co), % 0
0.5 to 2.0
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 96.8 to 98.4
50.9 to 63.7
Manganese (Mn), % 0.3 to 0.61
0 to 1.5
Molybdenum (Mo), % 0.44 to 0.65
4.0 to 5.0
Nickel (Ni), % 0
5.5 to 9.5
Nitrogen (N), % 0
0.3 to 0.5
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.010