Smithells Metals Reference Book Part 16

Tham khảo tài liệu 'smithells metals reference book part 16', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Elektron designation ASTM designation A8 AZ81 A8 High purity AZ81 Specifications BS 2970 1989 BSS L series Equivalent DTD MAGlM GP t MAGITB GP MAG2M SP t 684A MAG2TB SP 690A Heat treatment continued Precipitation Time h Temperature C Stress relief Time h Temperature C Mechanical propefiles dand cast SI units fi Tensile strength min MPa tonfin-2 proof stress min MPa tonfin-2 Elongation min Mechanical properties chill cast SI units fi Tensile strength min MPa tonf in 2 0 2 proof stress min MPa tonf in-2 Elongation min S0 Applications 2-4 250-330 St Imperial units following ir 140 9 1 85 2 st Imperial units following in 185 85 4 Automobile road wheels brackets 200 80 6 brackets 230 80 10 Good ductility and shock resistance 2-4 250-330 140 85 2 185 85 4 High-purity alloy- -offers go 200 80 6 230 80 10 t d corrosion resistance Magnesium alloys 26-51 Tabic ZIRCONIUM-FREE MAGNESIUM ALLOYS-conlimcd Elektron designation ASTM designation AZ91 c alloy Specifications BS 2970 1989 BSS L series Equivalent DTD MAG3M GP MAG3TB GP MAG3TF GP MAG7M GP MAG7TB GP MAG7TF GP Heal treatment continued Precipitation Time h 8 min 8 min Temperature C 210 max 210 max Stress relief Time h 2-4 2-4 Temperature C 250-330 250-330 Mechanical properties sand cast SI units fi Tensile strength min MPa tonf in-2 St Imperial units fo 125 lowing in brackets 200 200 125 185 185 proof stress min MPa tonf in-2 95 85 130 85 80 110 Elongation min 4 4 Mechanical properties chill cast SA units fir Tensile strength min MPa tonf in-2 st Imperial units fol 170 lowing in brackets 215 215 170 215 215 proof stress min MPa tonfin-2 100 85 130 85 80 110 Elongation min So 2 5 2 2 5 2 Applications For pressure tight applic ations Princip ll alloy for commer cial usage Increased proof .