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ASTM Grade HP Steel vs. EN 1.4309 Stainless Steel

Both ASTM grade HP steel and EN 1.4309 stainless steel are iron alloys. They have 67% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 1.4309 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 5.1
34
Fatigue Strength, MPa 130
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 490
490
Tensile Strength: Yield (Proof), MPa 260
210

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Corrosion, °C 440
420
Maximum Temperature: Mechanical, °C 1100
960
Melting Completion (Liquidus), °C 1370
1420
Melting Onset (Solidus), °C 1330
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Base Metal Price, % relative 34
16
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.8
3.1
Embodied Energy, MJ/kg 82
45
Embodied Water, L/kg 220
150

Common Calculations

PREN (Pitting Resistance) 27
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
140
Resilience: Unit (Modulus of Resilience), kJ/m3 170
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
18
Strength to Weight: Bending, points 17
18
Thermal Diffusivity, mm2/s 3.2
4.1
Thermal Shock Resistance, points 11
11

Alloy Composition

Carbon (C), % 0.35 to 0.75
0 to 0.030
Chromium (Cr), % 24 to 28
18 to 20
Iron (Fe), % 29.2 to 42.7
64.2 to 73
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 33 to 37
9.0 to 12
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 2.5
0 to 1.5
Sulfur (S), % 0 to 0.040
0 to 0.025