AISI 440B (S44003) Stainless Steel

Martensitic Stainless Steels

Material conditionannealed

Overview Chemical Composition Mechanical Properties Physical Properties Other Properties

Property Overview

Density7.7g/cm³

Elastic Modulus200GPa

Tensile Strength740MPa

Yield Strength430MPa

Brinell HardnessUnknown

Maximum Service Temperature870°C

Weight Calculator

Chemical Composition

0.75 to 1.0%

16 to 18%

0 to 0.75%

0 to 1.0%

0 to 0.040%

0 to 0.015%

78.2 to 83.3%

Mechanical

Elastic (Young's, Tensile) Modulus

200 GPa

Elongation at Break

18 %

Fatigue Strength

260 MPa

Poisson's Ratio

0.28

Shear Modulus

77 GPa

Shear Strength

460 MPa

Tensile Strength: Ultimate (UTS)

740 MPa

Tensile Strength: Yield (Proof)

430 MPa

Physical

Density

7.7 g/cm 3

Thermal

Latent Heat of Fusion

280 J/g

Maximum Temperature: Corrosion

390 °C

Maximum Temperature: Mechanical

870 °C

Melting Completion (Liquidus)

1480 °C

Melting Onset (Solidus)

1370 °C

Specific Heat Capacity

480 J/kg-K

Thermal Conductivity

23 W/m-K

Thermal Diffusivity

6.1 mm 2 /s

Thermal Expansion

10 µm/m-K

Thermal Shock Resistance

27 points

Electrical

Electrical Conductivity: Equal Volume

2.5 % IACS

Electrical Conductivity: Equal Weight (Specific)

2.9 % IACS

Calculated

PREN (Pitting Resistance)

Resilience: Ultimate (Unit Rupture Work)

110 MJ/m 3

Resilience: Unit (Modulus of Resilience)

460 kJ/m 3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

27 points

Strength to Weight: Bending

24 points

Environmental

Base Metal Price

9.0 % relative

Embodied Carbon

2.2 kg CO 2 /kg material

Embodied Energy

31 MJ/kg

Embodied Energy

31 MJ/kg 13 x 10 3 BTU/lb

Embodied Water

120 L/kg

Embodied Water

120 L/kg 14 gal/lb

Registered Designations & Aliases

440BAISI 440BAISI 440B (S44003) Stainless SteelS44003

Standards

ASTM A276 ASTM A276: Standard Specification for Stainless Steel Bars and Shapes

ASTM A276 ASTM A276: Standard Specification for Stainless Steel Bars and Shapes Creep-Resistant Steels, Fujio Abe et al. (editors), 2008 Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012 Welding Metallurgy of Stainless Steels, Erich Folkhard et al., 2012 ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels Properties and Selection: Irons, Steels and High Performance Alloys, ASM Handbook vol. 1, ASM International, 1993 Corrosion of Stainless Steels, A. John Sedriks, 1996

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