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UNS S41425 (13-5-2) Stainless Steel

Martensitic Stainless Steels

heat treated (HT)
OverviewChemical CompositionMechanical PropertiesPhysical PropertiesOther Properties

Property Overview

Density7.9g/cm³
Elastic Modulus200GPa
Tensile Strength920MPa
Yield Strength750MPa
Brinell Hardness280HB
Maximum Service Temperature810°C
Weight Calculator

Chemical Composition

C
0 to 0.050%
CR
12 to 15%
NI
4.0 to 7.0%
MO
1.5 to 2.0%
MN
0.5 to 1.0%
SI
0 to 0.5%
N
0.060 to 0.12%
P
0 to 0.020%
S
0 to 0.0050%
CU
0 to 0.3%
FE
74 to 81.9%

Mechanical

Elastic (Young's, Tensile) Modulus
200 GPa
Elongation at Break
17 %
Fatigue Strength
450 MPa
Impact Strength: V-Notched Charpy
76 J
Poisson's Ratio
0.28
Reduction in Area
51 %
Shear Modulus
77 GPa
Shear Strength
570 MPa
Tensile Strength: Ultimate (UTS)
920 MPa
Tensile Strength: Yield (Proof)
750 MPa

Hardness

Brinell Hardness
280

Physical

Density
7.9 g/cm 3

Thermal

Latent Heat of Fusion
280 J/g
Maximum Temperature: Corrosion
390 °C
Maximum Temperature: Mechanical
810 °C
Melting Completion (Liquidus)
1450 °C
Melting Onset (Solidus)
1410 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
16 W/m-K
Thermal Diffusivity
4.4 mm 2 /s
Thermal Expansion
10 µm/m-K
Thermal Shock Resistance
33 points

Electrical

Electrical Conductivity: Equal Volume
2.3 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.7 % IACS

Calculated

PREN (Pitting Resistance)
21
Resilience: Ultimate (Unit Rupture Work)
150 MJ/m 3
Resilience: Unit (Modulus of Resilience)
1420 kJ/m 3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
33 points
Strength to Weight: Bending
27 points

Environmental

Base Metal Price
13 % relative
Embodied Carbon
2.9 kg CO 2 /kg material
Embodied Energy
40 MJ/kg
Embodied Energy
40 MJ/kg 17 x 10 3 BTU/lb
Embodied Water
120 L/kg
Embodied Water
120 L/kg 14 gal/lb
Registered Designations & Aliases
13-5-2S41425UNS S41425 (13-5-2) Stainless Steel
Standards

ASTM A473 ASTM A473: Standard Specification for Stainless Steel Forgings

ASTM A479 ASTM A479: Standard Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels

ASTM A565 ASTM A565: Standard Specification for Martensitic Stainless Steel Bars for High-Temperature Service

ASTM A565 ASTM A565: Standard Specification for Martensitic Stainless Steel Bars for High-Temperature Service ASTM A473: Standard Specification for Stainless Steel Forgings ASTM A479: Standard Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels Pressure Vessels: External Pressure Technology, 2nd ed., Carl T. F. Ross, 2011 Corrosion of Stainless Steels, A. John Sedriks, 1996

ASTM A959 ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels