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ASTM Grade HT Steel vs. EN 1.4805 Stainless Steel

Both ASTM grade HT steel and EN 1.4805 stainless steel are iron alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 90% of their average alloy composition in common. There are 30 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 ASTM grade HT steel and the bottom bar is EN 1.4805 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 4.6
9.0
Fatigue Strength, MPa 130
130
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 500
490
Tensile Strength: Yield (Proof), MPa 270
250

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Maximum Temperature: Corrosion, °C 400
420
Maximum Temperature: Mechanical, °C 1010
1000
Melting Completion (Liquidus), °C 1390
1390
Melting Onset (Solidus), °C 1340
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
14
Thermal Expansion, µm/m-K 15
16

Otherwise Unclassified Properties

Base Metal Price, % relative 31
26
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 5.4
4.7
Embodied Energy, MJ/kg 76
66
Embodied Water, L/kg 190
180

Common Calculations

PREN (Pitting Resistance) 18
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
37
Resilience: Unit (Modulus of Resilience), kJ/m3 180
150
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 18
17
Strength to Weight: Bending, points 18
18
Thermal Diffusivity, mm2/s 3.2
3.7
Thermal Shock Resistance, points 12
11

Alloy Composition

Carbon (C), % 0.35 to 0.75
0.2 to 0.5
Chromium (Cr), % 15 to 19
19 to 23
Iron (Fe), % 38.2 to 51.7
44.9 to 56.8
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0 to 0.5
Nickel (Ni), % 33 to 37
23 to 27
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.5
1.0 to 2.0
Sulfur (S), % 0 to 0.040
0 to 0.030