General Properties

Alloy 347 (UNS S34700) is columbium stabilized austenitic stainless steel plate with good general corrosion resistance and somewhat better resistance in strong oxidizing conditions than 321 (UNS S32100). It has excellent resistance to intergranular corrosion after exposure to temperatures in the chromium carbide precipitation range of 800 – 1500°F (427 – 816°C). The alloy has good oxidation resistance and creep strength to 1500°F (816°C). It also possesses good low temperature toughness.

While Alloys 321 and 347 continue to be employed for prolonged service in the 800 to 1500°F (427 to 816°C) temperature range, Alloy 304L has supplanted these stabilized grades for applications involving only welding or short time heating.
Alloys 321 and 347 stainless steels are also advantageous for high temperature service because of their good mechanical properties. Alloys 321 and 347 stainless steels offer higher creep and stress rupture properties than Alloy 304 and, particularly, Alloy 304L, which might also be considered for exposures where sensitization and intergranular corrosion are concerns. This results in higher elevated temperature allowable stresses for these stabilized alloys for ASME Boiler and Pressure Vessel Code applications. The 321 and 347 alloys have maximum use temperatures of 1500°F (816°C) for code applications like Alloy 304, whereas Alloy 304L is limited to 800°F (426°C).

Corrosion Resistance

Alloy 347 stainless steel plate exhibits good general corrosion resistance that is comparable to 304. It was developed for use in the chromium carbide precipitation range of 800 – 1500°F (427 – 816°C) where un-stabilized alloys such as 304 are subject to intergranular attack. In this temperature range, the overall corrosion resistance of Alloy 347 stainless steel plate is superior to Alloy 321 stainless steel plate. Alloy 347 also performs somewhat better than Alloy 321 in strongly oxidizing environments up to 1500°F (816°C).

 

 

Low Mang Kok B: Klang, Selangor, 18.12.1973; P: Low Chong Seng 1948; Lee Sok Yen 1952; MS: Chua Hooi Koon 1976; Ch: Low Chun Leong 1998; Low Chun Ee 2002; E: 1980 - 1985 SJK (C) Pin Hua 1 - Primary School; 1986 - 1991 SM Kwang Hua - Secondary School; 1992 - 1993 College WIT - Electronic technician; Ca: 1992 - 1993 Lion Suzuki Motor Sdn. Bhd. - Sales Executive; 1993 - 1994 Great Eastern Life Assurance (Malaysia) Berhad - Insurance Agent; 1994 - 1998 Kimwin Special Steel Sdn. Bhd. - Sales Executive; 1998 - 2000 ASSAB Steels (Malaysia) Sdn. Bhd. - Sales Engineer ; 2000 - 2004 Kimwin Special Steel Sdn. Bhd. - Freelancer Sales ; 2004 - 2010 EE TECK Marketing - Founder and Managing Director; 2010 - 2019 E Steel Sdn. Bhd - Founder and Managing Director; WaCW: Global Business Magazine - Asia Pacific Top Excellence Brand 2011; International Prestige Brand Award Book & Record 2017; Aw: Asia Pacific Top 100 Excellence Brand In Year 2011; International Prestige Brand Of The Year 2017; Me: China Entrepreneur Club; LS: English, Malay, Mandarin, Cantonese, Teochew, Hokkien; H: Gardening; Online Marketing; PMM: To develop Steel business globally through online new business model; RoS: Self discipline; Keep learning and always look for solution instead focus on problem; Web: www.esteelsuppliers.com Your index: Industry, Trade and Services Successful People in Malaysia (2nd Edition) Release date: December 2020 ( BPH - British Publishing House Ltd )