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AISI 334 Stainless Steel vs. EN 1.4438 Stainless Steel

Both AISI 334 stainless steel and EN 1.4438 stainless steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is AISI 334 stainless steel and the bottom bar is EN 1.4438 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
41
Fatigue Strength, MPa 150
220
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
79
Shear Strength, MPa 360
420
Tensile Strength: Ultimate (UTS), MPa 540
620
Tensile Strength: Yield (Proof), MPa 190
250

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 490
420
Maximum Temperature: Mechanical, °C 1000
1000
Melting Completion (Liquidus), °C 1410
1450
Melting Onset (Solidus), °C 1370
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 22
22
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.1
4.4
Embodied Energy, MJ/kg 59
60
Embodied Water, L/kg 170
160

Common Calculations

PREN (Pitting Resistance) 19
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
200
Resilience: Unit (Modulus of Resilience), kJ/m3 96
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
22
Strength to Weight: Bending, points 19
20
Thermal Shock Resistance, points 12
14

Alloy Composition

Aluminum (Al), % 0.15 to 0.6
0
Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 18 to 20
17.5 to 19.5
Iron (Fe), % 55.7 to 62.7
57.3 to 66.5
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 19 to 21
13 to 16
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0.15 to 0.6
0