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EN 1.4477 Stainless Steel vs. ASTM Grade HP Steel

Both EN 1.4477 stainless steel and ASTM grade HP steel are iron alloys. They have 70% of their average alloy composition in common. There are 30 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 EN 1.4477 stainless steel and the bottom bar is ASTM grade HP steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
140
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 22 to 23
5.1
Fatigue Strength, MPa 420 to 490
130
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
78
Tensile Strength: Ultimate (UTS), MPa 880 to 930
490
Tensile Strength: Yield (Proof), MPa 620 to 730
260

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Corrosion, °C 460
440
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1430
1370
Melting Onset (Solidus), °C 1380
1330
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 13
12
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 20
34
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.7
5.8
Embodied Energy, MJ/kg 52
82
Embodied Water, L/kg 190
220

Common Calculations

PREN (Pitting Resistance) 41
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180 to 190
21
Resilience: Unit (Modulus of Resilience), kJ/m3 940 to 1290
170
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31 to 33
17
Strength to Weight: Bending, points 26 to 27
17
Thermal Diffusivity, mm2/s 3.5
3.2
Thermal Shock Resistance, points 23 to 25
11

Alloy Composition

Carbon (C), % 0 to 0.030
0.35 to 0.75
Chromium (Cr), % 28 to 30
24 to 28
Copper (Cu), % 0 to 0.8
0
Iron (Fe), % 56.6 to 63.6
29.2 to 42.7
Manganese (Mn), % 0.8 to 1.5
0 to 2.0
Molybdenum (Mo), % 1.5 to 2.6
0 to 0.5
Nickel (Ni), % 5.8 to 7.5
33 to 37
Nitrogen (N), % 0.3 to 0.4
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 2.5
Sulfur (S), % 0 to 0.015
0 to 0.040