UNS S44627 (XM-27) Stainless Steel

Ferritic Stainless Steels

Overview Chemical Composition Mechanical Properties Physical Properties Other Properties

Property Overview

Density7.7g/cm³

Elastic Modulus200GPa

Tensile Strength490MPa

Yield Strength300MPa

Brinell Hardness170HB

Maximum Service Temperature1100°C

Weight Calculator

Chemical Composition

0 to 0.010%

25 to 27.5%

0 to 0.5%

0.75 to 1.5%

0 to 0.4%

0 to 0.015%

0 to 0.020%

0 to 0.2%

0.050 to 0.2%

69.2 to 74.2%

Mechanical

Elastic (Young's, Tensile) Modulus

200 GPa

Elongation at Break

24 %

Fatigue Strength

200 MPa

Poisson's Ratio

0.27

Reduction in Area

51 %

Shear Modulus

80 GPa

Shear Strength

310 MPa

Tensile Strength: Ultimate (UTS)

490 MPa

Tensile Strength: Yield (Proof)

300 MPa

Hardness

Brinell Hardness

170

Rockwell B Hardness

Physical

Density

7.7 g/cm 3

Thermal

Latent Heat of Fusion

290 J/g

Maximum Temperature: Corrosion

470 °C

Maximum Temperature: Mechanical

1100 °C

Melting Completion (Liquidus)

1440 °C

Melting Onset (Solidus)

1400 °C

Specific Heat Capacity

480 J/kg-K

Thermal Conductivity

17 W/m-K

Thermal Diffusivity

4.6 mm 2 /s

Thermal Expansion

11 µm/m-K

Thermal Shock Resistance

16 points

Electrical

Electrical Conductivity: Equal Volume

2.2 % IACS

Electrical Conductivity: Equal Weight (Specific)

2.6 % IACS

Calculated

PREN (Pitting Resistance)

Resilience: Ultimate (Unit Rupture Work)

100 MJ/m 3

Resilience: Unit (Modulus of Resilience)

220 kJ/m 3

Stiffness to Weight: Axial

15 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

18 points

Strength to Weight: Bending

18 points

Environmental

Base Metal Price

14 % relative

Embodied Carbon

2.9 kg CO 2 /kg material

Embodied Energy

41 MJ/kg

Embodied Energy

41 MJ/kg 18 x 10 3 BTU/lb

Embodied Water

160 L/kg

Embodied Water

160 L/kg 19 gal/lb

Registered Designations & Aliases

S44627UNS S44627 (XM-27) Stainless SteelXM-27

Standards

ASTM A182 ASTM A182: Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service

ASTM A240 ASTM A240: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications

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

ASTM A479 ASTM A479: Standard Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels ASTM A182: Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service ASTM A240: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications Welding Metallurgy and Weldability of Stainless Steels, John C. Lippold and Damian J. Kotecki, 2005 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