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EN 1.4372 Stainless Steel vs. EN 1.4948 Stainless Steel

Both EN 1.4372 stainless steel and EN 1.4948 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have a moderately high 94% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4372 stainless steel and the bottom bar is EN 1.4948 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 47
48
Fatigue Strength, MPa 330
200
Impact Strength: V-Notched Charpy, J 90
100
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 560
430
Tensile Strength: Ultimate (UTS), MPa 790
610
Tensile Strength: Yield (Proof), MPa 350
210

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 880
930
Melting Completion (Liquidus), °C 1410
1430
Melting Onset (Solidus), °C 1370
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 12
15
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.6
3.0
Embodied Energy, MJ/kg 38
43
Embodied Water, L/kg 140
140

Common Calculations

PREN (Pitting Resistance) 19
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
230
Resilience: Unit (Modulus of Resilience), kJ/m3 320
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
22
Strength to Weight: Bending, points 25
21
Thermal Diffusivity, mm2/s 4.0
4.5
Thermal Shock Resistance, points 17
14

Alloy Composition

Carbon (C), % 0 to 0.15
0.040 to 0.080
Chromium (Cr), % 16 to 18
17 to 19
Iron (Fe), % 67.5 to 75
66.8 to 75
Manganese (Mn), % 5.5 to 7.5
0 to 2.0
Nickel (Ni), % 3.5 to 5.5
8.0 to 11
Nitrogen (N), % 0.050 to 0.25
0 to 0.1
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015