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ASTM Grade HE Steel vs. EN 1.4865 Stainless Steel

Both ASTM grade HE steel and EN 1.4865 stainless steel are iron alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 71% of their average alloy composition in common.

For each property being compared, the top bar is ASTM grade HE steel and the bottom bar is EN 1.4865 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 10
6.8
Fatigue Strength, MPa 160
120
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 670
470
Tensile Strength: Yield (Proof), MPa 310
250

Thermal Properties

Latent Heat of Fusion, J/g 310
320
Maximum Temperature: Corrosion, °C 450
410
Maximum Temperature: Mechanical, °C 1100
1020
Melting Completion (Liquidus), °C 1400
1380
Melting Onset (Solidus), °C 1360
1330
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 14
12
Thermal Expansion, µm/m-K 17
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 19
33
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 3.5
5.8
Embodied Energy, MJ/kg 50
81
Embodied Water, L/kg 190
200

Common Calculations

PREN (Pitting Resistance) 29
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 56
27
Resilience: Unit (Modulus of Resilience), kJ/m3 240
160
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
16
Strength to Weight: Bending, points 22
17
Thermal Diffusivity, mm2/s 3.6
3.1
Thermal Shock Resistance, points 14
11

Alloy Composition

Carbon (C), % 0.2 to 0.5
0.3 to 0.5
Chromium (Cr), % 26 to 30
18 to 21
Iron (Fe), % 53.9 to 65.8
34.4 to 44.7
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0 to 0.5
Nickel (Ni), % 8.0 to 11
36 to 39
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
1.0 to 2.5
Sulfur (S), % 0 to 0.040
0 to 0.030