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EN 1.4487 Stainless Steel vs. AISI 348H Stainless Steel

Both EN 1.4487 stainless steel and AISI 348H stainless steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4487 stainless steel and the bottom bar is AISI 348H stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
40
Fatigue Strength, MPa 210
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 560
580
Tensile Strength: Yield (Proof), MPa 260
230

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 420
500
Maximum Temperature: Mechanical, °C 960
940
Melting Completion (Liquidus), °C 1420
1430
Melting Onset (Solidus), °C 1380
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 16
20
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.1
3.9
Embodied Energy, MJ/kg 44
56
Embodied Water, L/kg 150
150

Common Calculations

PREN (Pitting Resistance) 22
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
190
Resilience: Unit (Modulus of Resilience), kJ/m3 170
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20
21
Strength to Weight: Bending, points 19
20
Thermal Diffusivity, mm2/s 4.2
4.1
Thermal Shock Resistance, points 16
13

Alloy Composition

Carbon (C), % 0 to 0.030
0.040 to 0.1
Chromium (Cr), % 18 to 20
17 to 19
Cobalt (Co), % 0
0 to 0.2
Iron (Fe), % 64.7 to 72.9
63.8 to 73.6
Manganese (Mn), % 0 to 1.5
0 to 2.0
Nickel (Ni), % 9.0 to 12
9.0 to 13
Niobium (Nb), % 0
0.32 to 1.0
Nitrogen (N), % 0.12 to 0.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.5
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Tantalum (Ta), % 0
0 to 0.1