07Cr17Ni7Al — stainless Steel: Composition, Properties & Applications
Also known as: 07Cr17Ni7Al
Semi-austenitic precipitation-hardening, spring applications. (GB/T 20878; equiv ASTM 631 / AMS 5673 / JIS SUS631 / GB 07Cr17Ni7Al). Nominal values—confirm mill certificate.
CHEMICAL COMPOSITION
C:≤0.09;Cr:16.0-18.0;Ni:6.5-7.75;Al:0.75-1.50
MECHANICAL PROPERTIES
Tensile (TH1050):≥1310 MPa;Yield:≥1170 MPa
TYPICAL APPLICATIONS
半奥氏体沉淀硬化，弹性件。,"Sheet
AVAILABLE FORMS
Bar
STANDARDS & EQUIVALENT GRADES
T 20878 07Cr17Ni7Al; ASTM 631 / AMS 5673; Weld with low-carbon or stabilized filler (e.g., 316L, 347) to avoid sensitization; passivate after fabrication. Not hardenable, but work-hardens rapidly — use sharp tools and rigid setups. Avoid chloride contact for 304 in warm service; specify 316/317 for marine or aggressive media.
HEAT TREATMENT
Austenitic stainless steel with excellent corrosion resistance, formability and weldability; non-magnetic in annealed condition. High nickel (≈7.125%) stabilises the austenite and improves toughness and pitting resistance. Used in food processing, chemical plant, architecture, heat exchangers, kitchenware and medical devices.
PROCESSING PRECAUTIONS
Solution anneal 1010–1150 °C followed by rapid water quench to retain austenite; not hardenable by heat treatment. Sensitization avoided by low carbon or stabilizers (Ti/Nb).
SOURCE & SUPPLY
Shanxi Youte Steel stocks 07Cr17Ni7Al in bars, plates, pipes and forgings with mill test certificates, cut-to-length service and export packaging. Contact our team for quotations and technical data sheets.
Semi-austenitic precipitation-hardening, spring applications. (GB/T 20878; equiv ASTM 631 / AMS 5673 / JIS SUS631 / GB 07Cr17Ni7Al). Nominal values—confirm mill certificate.
CHEMICAL COMPOSITION
C:≤0.09;Cr:16.0-18.0;Ni:6.5-7.75;Al:0.75-1.50
MECHANICAL PROPERTIES
Tensile (TH1050):≥1310 MPa;Yield:≥1170 MPa
TYPICAL APPLICATIONS
半奥氏体沉淀硬化，弹性件。,"Sheet
AVAILABLE FORMS
Bar
STANDARDS & EQUIVALENT GRADES
T 20878 07Cr17Ni7Al; ASTM 631 / AMS 5673; Weld with low-carbon or stabilized filler (e.g., 316L, 347) to avoid sensitization; passivate after fabrication. Not hardenable, but work-hardens rapidly — use sharp tools and rigid setups. Avoid chloride contact for 304 in warm service; specify 316/317 for marine or aggressive media.
HEAT TREATMENT
Austenitic stainless steel with excellent corrosion resistance, formability and weldability; non-magnetic in annealed condition. High nickel (≈7.125%) stabilises the austenite and improves toughness and pitting resistance. Used in food processing, chemical plant, architecture, heat exchangers, kitchenware and medical devices.
PROCESSING PRECAUTIONS
Solution anneal 1010–1150 °C followed by rapid water quench to retain austenite; not hardenable by heat treatment. Sensitization avoided by low carbon or stabilizers (Ti/Nb).
SOURCE & SUPPLY
Shanxi Youte Steel stocks 07Cr17Ni7Al in bars, plates, pipes and forgings with mill test certificates, cut-to-length service and export packaging. Contact our team for quotations and technical data sheets.
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