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ASTM Grade HP Steel vs. EN 1.4655 Stainless Steel

Both ASTM grade HP steel and EN 1.4655 stainless steel are iron alloys. They have 65% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HP steel and the bottom bar is EN 1.4655 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 5.1
23 to 25
Fatigue Strength, MPa 130
320
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 78
78
Tensile Strength: Ultimate (UTS), MPa 490
720 to 730
Tensile Strength: Yield (Proof), MPa 260
450 to 480

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Corrosion, °C 440
440
Maximum Temperature: Mechanical, °C 1100
1050
Melting Completion (Liquidus), °C 1370
1420
Melting Onset (Solidus), °C 1330
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 34
15
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 5.8
2.9
Embodied Energy, MJ/kg 82
41
Embodied Water, L/kg 220
160

Common Calculations

PREN (Pitting Resistance) 27
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
150 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 170
510 to 580
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
26
Strength to Weight: Bending, points 17
23
Thermal Diffusivity, mm2/s 3.2
4.0
Thermal Shock Resistance, points 11
20

Alloy Composition

Carbon (C), % 0.35 to 0.75
0 to 0.030
Chromium (Cr), % 24 to 28
22 to 24
Copper (Cu), % 0
1.0 to 3.0
Iron (Fe), % 29.2 to 42.7
63.6 to 73.4
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0.1 to 0.6
Nickel (Ni), % 33 to 37
3.5 to 5.5
Nitrogen (N), % 0
0.050 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 2.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.015