Super-ferritic stainless steel Grade 439

Roll over the image to zoom in

Posted On

13-Nov-13

Product Details

and denitrifying process can get the lower content of carbon and nitrogen.
Application of Super Ferritic Stainless Steel Industry
The industry of automobile exhausting system: We have established long term cooperation with end users and service centers which work at automobile exhausting tubes and pressed parts.
Conventional Products
Steel grade Grade Specifications
Thickness Width mm Weight MT Standard Application
400 series 439
TTS439 2B/2D Surface: 0.3-3.0mm
BA surface: 0.2-1.5mm 2B/2D Surface:
1000-1280
1000-2000
BA surface: 1000-1500 6-15MT ASTM/ASME
Q/T 012-2011 Apply to elevator, kitchen appliance
Chemical Composition
Grade Mass Percentage (%) MAX
C Si Mn P S Cr N Mo Others
439 0.030 1.00 1.00 0.040 0.015 17.5-18.5 0.030 - Nb+Ti:4C-0.75
Physical properties
Grade Density (g/cm3) Elastic modulus GPa Linear expansion coefficient 10-6/K20-100C Themnal conductivity W/m K 100C J/Kg k Specific heat 20C Resistance rate (UM cm) Magnetism
439 7.70 200 10.4 23.1 460 60 Qualified
Welding Properties and Notice:
Low carbon and Nitrigon, Titanium and Niobium added, high corrosion-resisted performance on welding parts.
Difficult for Fusion wedding and etter for filler wire welding.
Low thermal expansion coefficient-high heat conduction and small deformation after welding comparing with 304.

View More