Stainless Steels - Their properties and their suitability for welding

Khi chúng ta nói về thép không gỉ trong bài phát biểu hàng ngày, chúng tôi có nghĩa là thép hợp kim bằng crom ít nhất 12%. Như là một kết quả của phản ứng với oxy trong không khí, ủng hộ tective hình thức oxit phim trên hợp kim này và ngăn ngừa lông Ther quá trình oxy hóa nhanh chóng. Thép không gỉ hiện đại ngày arealso thường hợp kim nickel và molypden, whichfurther tăng cường tính chất chống ăn mòn của họ...
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Stainless Steels - Their properties and their suitability for weldingomslag 1o4,2o3 02-06-27 07.36 Sida 2 Interim reprint AvestaPolarit Welding Stainless steels Stainless steels – their properties and their suitability for weldingomslag 1o4,2o3 02-06-26 12.35 Sida 3 INDEX INTRODUCTION .................................................................................................................................. 1 COMPOSITION AND MECHANICAL PROPERTIES .......................................................................... 1 PHYSICAL PROPERTIES ................................................................................................................... 2 CORROSION RESISTANCE PROPERTIES ....................................................................................... 2 WELDABILITY ..................................................................................................................................... 3 FILLER METALS FOR STAINLESS STEELS ..................................................................................... 4 FILLER METAL FORMS ...................................................................................................................... 5 WELD DEFECTS/PRACTICAL ADVICE ............................................................................................. 6 POST-WELD TREATMENT ................................................................................................................. 7 The revisions made to this brochure concern the cover, company name and logotype only, which now adhere to AvestaPolarit’s graphic profile. In all other respects, the contents are identical with the information supplied in brochure 9473:2.Stainless Steel 02-06-26 12.40 Sida 1 STAINLESS STEELS processing industry. The molybdenum-free steels also have very good high-temperature properties and are therefore used in furnaces and heat exchangers. Their properties and their Their good impact strength at low temperatures is often exploited in apparatus such as vessels for cryo- suitability for welding genic liquids. by Björn Holmberg, M.Sc. Austenitic steels cannot be hardened by heat treat- ment. They are normally supplied in the quench- annealed state, which means that they are soft and highly formable. Their hardness and strength are increased by cold working. Certain steel grades are therefore sup- plied in the cold-stretched or hard-rolled condition. Ferritic steels These steels are, in principle, ferritic at all tempera- tures. This is achieved by a low content of austenite- formers, mainly nickel, and a high content of ferrite- formers, mainly chromium. The older type, such as AISI 430, was mainly used for household utensils and other purposes where corro- sion conditions were not particularly demanding. INTRODUCTION Steels with a high chromium content, such as AISI 446 When we speak of s ...