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Welding Stainless Steel to other Steel Material






Welding austenitic stainless steel to carbon and other low alloy steel are established methods in the process and construction industries. Dissimilar metal welds involving stainless steel can be done using most full fusion weld methods, including TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas).

Weld procedures using filler (consumable) enable better control of joint corrosion resistance and mechanical properties. In selecting the weld filler, the joint is considered as being stainless, rather than the carbon steel. Over-alloyed fillers are used to avoid dilution of the alloying elements in the fusion zone of the parent stainless steel.

Dissimilar metal combinations

The most common combinations of dissimilar steel involving stainless steel are plain carbon or low alloy structural grades and austenitic stainless steel grades such as 1.4301 (304) or 1.4401 (316).

Welding conditions

Carbon steel and alloy steel containing less than 0.20%C do not normally need any preheat when being welded to austenitic stainless steel. Carbon and alloy steels with carbon levels over 0.20% may require preheat. High restraint joints, where material thickness is over 30mm, should also be preheated. Temperature of 150 C are usually adequate.

Carbon steel may be more prone to hydrogen associated defects than austenitic stainless steel and so careful drying of welding consumables is advisable.

When welding stainless steel to galvanised steel, the zinc coating around the area to be joined should be removed before welding. Molten zinc if present in the weld fusion zone can result in embrittlement or reduced corrosion resistance of the finished weld. When welding stainless steel to mild steel, LDX309L, S32304, S32205, 309L, P5,P10,P16,904L are frequently be used.

When welding Stainless Steel to Nickel base alloy steel P10 P12 are frequently used.

Related References:
1. Welding Process and Letter Designations
2. Welding Stainless Steel to other Steel
3. Welding and Post Fabrication Cleaning for Construction and Architectural Application
4. Welded Stainless Steel Pipe
5. Post weld cleaning and finishing of stainless steel
6. Avoid PWHT Post Weld Heat Treatment
7. Fume Associated With Welding Stainless Steel
8. Avoiding Distortion During Welding Stainless Steel
9. Design Strength of Welded Connections
10. Processes for Welding Stainless Steel
11. Brazing Stainless Steel
12. Soldering Stainless Steel
13. Welding Stainless Steel
14. Selection of Welding Consumables Filler
15. Selection of Welding Consumable for Welding Stainless Steel
16. Filler Metals For Welding Stainless Steel
17. Schaeffler and Delong Diagrams for Predicting Ferrite Levels
18. Welding Properties of Stainless Steel
19. 308L 309L 316L 347 Filler Metal Introduction

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EN 10305-1 E215 E235 E355 Seamless Precision Steel Tube Tubing Tubes
DIN 2393 St28 St34.2 St37.2 St44.2 St52.3 Welded Precision Steel Tubes
EN 10305-2 E195 E235 E355 Welded Cold Drawn Precision Steel Tube