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EN 1.4125 Stainless Steel vs. ASTM Grade HC Steel

Both EN 1.4125 stainless steel and ASTM grade HC steel are iron alloys. They have 86% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4125 stainless steel and the bottom bar is ASTM grade HC steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 19
6.0
Fatigue Strength, MPa 300
96
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 800
430
Tensile Strength: Yield (Proof), MPa 470
200

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 390
460
Maximum Temperature: Mechanical, °C 870
1100
Melting Completion (Liquidus), °C 1430
1410
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
14
Density, g/cm3 7.7
7.6
Embodied Carbon, kg CO2/kg material 2.3
2.8
Embodied Energy, MJ/kg 32
40
Embodied Water, L/kg 120
170

Common Calculations

PREN (Pitting Resistance) 19
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
21
Resilience: Unit (Modulus of Resilience), kJ/m3 570
95
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 29
16
Strength to Weight: Bending, points 25
16
Thermal Diffusivity, mm2/s 4.1
4.5
Thermal Shock Resistance, points 29
14

Alloy Composition

Carbon (C), % 1.0 to 1.2
0 to 0.5
Chromium (Cr), % 16 to 18
26 to 30
Iron (Fe), % 78 to 82.7
61.9 to 74
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.4 to 0.8
0 to 0.5
Nickel (Ni), % 0
0 to 4.0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.015
0 to 0.040