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ASTM Grade HF Steel vs. EN 1.4865 Stainless Steel

Both ASTM grade HF steel and EN 1.4865 stainless steel are iron alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 72% of their average alloy composition in common.

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

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
6.8
Fatigue Strength, MPa 200
120
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 550
470
Tensile Strength: Yield (Proof), MPa 270
250

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 1000
1020
Melting Completion (Liquidus), °C 1410
1380
Melting Onset (Solidus), °C 1370
1330
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
12
Thermal Expansion, µm/m-K 16
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 17
33
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 3.2
5.8
Embodied Energy, MJ/kg 46
81
Embodied Water, L/kg 150
200

Common Calculations

PREN (Pitting Resistance) 21
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
27
Resilience: Unit (Modulus of Resilience), kJ/m3 180
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
16
Strength to Weight: Bending, points 19
17
Thermal Diffusivity, mm2/s 4.2
3.1
Thermal Shock Resistance, points 12
11

Alloy Composition

Carbon (C), % 0.2 to 0.4
0.3 to 0.5
Chromium (Cr), % 18 to 23
18 to 21
Iron (Fe), % 60 to 73.8
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 12
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