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EN 1.4109 Stainless Steel vs. EN 1.4376 Stainless Steel

Both EN 1.4109 stainless steel and EN 1.4376 stainless steel are iron alloys. They have 87% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4109 stainless steel and the bottom bar is EN 1.4376 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
230
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 19
45
Fatigue Strength, MPa 270
420
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 480
530
Tensile Strength: Ultimate (UTS), MPa 770
750
Tensile Strength: Yield (Proof), MPa 420
450

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 820
930
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 30
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
12
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.2
2.6
Embodied Energy, MJ/kg 30
37
Embodied Water, L/kg 110
140

Common Calculations

PREN (Pitting Resistance) 17
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
290
Resilience: Unit (Modulus of Resilience), kJ/m3 460
520
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
27
Strength to Weight: Bending, points 24
24
Thermal Diffusivity, mm2/s 8.1
4.0
Thermal Shock Resistance, points 28
17

Alloy Composition

Carbon (C), % 0.6 to 0.75
0 to 0.1
Chromium (Cr), % 14 to 16
17 to 20.5
Iron (Fe), % 80.7 to 85
65.5 to 76
Manganese (Mn), % 0 to 1.0
5.0 to 8.0
Molybdenum (Mo), % 0.4 to 0.8
0
Nickel (Ni), % 0
2.0 to 4.5
Nitrogen (N), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015