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ASTM Grade HT Steel vs. EN 1.4959 Stainless Steel

Both ASTM grade HT steel and EN 1.4959 stainless steel are iron alloys. They have a very high 95% 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 ASTM grade HT steel and the bottom bar is EN 1.4959 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 4.6
40
Fatigue Strength, MPa 130
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 500
630
Tensile Strength: Yield (Proof), MPa 270
190

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 400
510
Maximum Temperature: Mechanical, °C 1010
1090
Melting Completion (Liquidus), °C 1390
1400
Melting Onset (Solidus), °C 1340
1350
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
2.0

Otherwise Unclassified Properties

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

Common Calculations

PREN (Pitting Resistance) 18
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
190
Resilience: Unit (Modulus of Resilience), kJ/m3 180
96
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
22
Strength to Weight: Bending, points 18
20
Thermal Diffusivity, mm2/s 3.2
3.2
Thermal Shock Resistance, points 12
15

Alloy Composition

Aluminum (Al), % 0
0.25 to 0.65
Carbon (C), % 0.35 to 0.75
0.050 to 0.1
Chromium (Cr), % 15 to 19
19 to 22
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 38.2 to 51.7
39.4 to 50.5
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 33 to 37
30 to 34
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 2.5
0 to 0.7
Sulfur (S), % 0 to 0.040
0 to 0.010
Titanium (Ti), % 0
0.25 to 0.65