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EN 1.4865 Stainless Steel vs. ASTM Grade HT Steel

Both EN 1.4865 stainless steel and ASTM grade HT steel are iron alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a moderately high 94% of their average alloy composition in common.

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

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
150
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 6.8
4.6
Fatigue Strength, MPa 120
130
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 470
500
Tensile Strength: Yield (Proof), MPa 250
270

Thermal Properties

Latent Heat of Fusion, J/g 320
310
Maximum Temperature: Corrosion, °C 410
400
Maximum Temperature: Mechanical, °C 1020
1010
Melting Completion (Liquidus), °C 1380
1390
Melting Onset (Solidus), °C 1330
1340
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
12
Thermal Expansion, µm/m-K 15
15

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 33
31
Density, g/cm3 8.0
8.0
Embodied Carbon, kg CO2/kg material 5.8
5.4
Embodied Energy, MJ/kg 81
76
Embodied Water, L/kg 200
190

Common Calculations

PREN (Pitting Resistance) 20
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
19
Resilience: Unit (Modulus of Resilience), kJ/m3 160
180
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 16
18
Strength to Weight: Bending, points 17
18
Thermal Diffusivity, mm2/s 3.1
3.2
Thermal Shock Resistance, points 11
12

Alloy Composition

Carbon (C), % 0.3 to 0.5
0.35 to 0.75
Chromium (Cr), % 18 to 21
15 to 19
Iron (Fe), % 34.4 to 44.7
38.2 to 51.7
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0 to 0.5
Nickel (Ni), % 36 to 39
33 to 37
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 1.0 to 2.5
0 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.040