439m 439 Stainless Steel Tube Appliacation for Exhaust Systems

Basic Info

Model NO.	439
Type	Stainless Steel Pipes
Standard	ASTM, AISI
Grade	400 Series
Certification	AISI, ASTM
Shape	Round
Technique	Welded
Surface Treatment	Polished
Transport Package	Wooden Pallet
Specification	OD 6-127mm
Trademark	TISCO BAO STEEL
Origin	China
HS Code	7304319000
Production Capacity	50000kgs

Product Description

439 stainless steel

The 439 steel grade is based on the ordinary ferrite material (430) to reduce the content of C, and the addition of stabilizing elements such as Ti, so that the steel species have improved intergranular corrosion resistance, formability and weldability. Compared with the 304 steel grade, the elongation is low (about 30%), but the strength and corrosion resistance are equivalent, and the corrosion resistance is better than the 200 series materials.

1. chemical composition

Country	Standard	Grade	(%)Chemical Composition								≤
			C	Si	Mn	P	S	Cr	Ni	N	Ti
USA	ASTM	439	0.03	1.00	1.00	0.04	0.03	17.0- 19.0	≤ 0.5	≤ 0.04	0.2+4(C+N)-1.10
Ger	DIN	1.4510	0.05	1.00	0.00	0.04	0.015	16.0-18.0	-	-	4(C+N)-0.80

2. Mechanical Property

Standard	Mechanical Property
Tensile Strength	Yield Strength	Elongation(%)	Hardness
N/m	(≤)N/m	(≥)%	(≤)HV
ASTM	≥415	205	22	180

3. Main purpose

Decoration board for elevator and escalator

Building decoration board, such as decorative structural parts, structural pipe

Automobile exhaust system components

Washing machine inner drum

Applications:

Although Alloy 439 is designed principally for the automotive exhaust industry, it has been successfully used in other industrial applications as well. Some examples of applications that call for Alloy 439 include:

Automotive exhaust systems

Catalytic converters

Mufflers

Tailpipes

Farm equipment

Structural support and hangers

Transformer cases

Furnace components

Heat exchanger tubing