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ASTM Grade HH Steel vs. EN 1.4922 Stainless Steel

Both ASTM grade HH steel and EN 1.4922 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 31 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 HH steel and the bottom bar is EN 1.4922 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
16
Fatigue Strength, MPa 150
330
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 580
770
Tensile Strength: Yield (Proof), MPa 270
550

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Maximum Temperature: Corrosion, °C 440
380
Maximum Temperature: Mechanical, °C 1100
720
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1360
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
24
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 20
7.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.7
2.8
Embodied Energy, MJ/kg 53
40
Embodied Water, L/kg 180
100

Common Calculations

PREN (Pitting Resistance) 27
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 53
110
Resilience: Unit (Modulus of Resilience), kJ/m3 190
770
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
27
Strength to Weight: Bending, points 20
24
Thermal Diffusivity, mm2/s 3.8
6.5
Thermal Shock Resistance, points 12
27

Alloy Composition

Carbon (C), % 0.2 to 0.5
0.17 to 0.23
Chromium (Cr), % 24 to 28
10 to 12.5
Iron (Fe), % 52.9 to 64.8
83.5 to 88.2
Manganese (Mn), % 0 to 2.0
0.3 to 1.0
Molybdenum (Mo), % 0 to 0.5
0.8 to 1.2
Nickel (Ni), % 11 to 14
0.3 to 0.8
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 2.0
0 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.015
Vanadium (V), % 0
0.2 to 0.35