Main reference standards

ASTM / ASME
PLATES:B/SB 551
WELDED PIPES:B/SB 658
SEAMLESS PIPES:B/SB 658
FITTINGS:B/SB653

VdTÜV
480

Mechanical and chemical characteristics

Reference:B 551
Tensile Strength min N/mm2:380
Yield Point min N/mm2:205
Elongation 2” min %:16
C % max:0.05
N % max:0.025
H % max:0.005
O % max:0.16
Fe+Cr % max:0.2
Hf % max:4.5
Zr+Hf % min:99.2

Properties and main applications

* Zirconium 702 is characterized by immunity to stress corrosion cracking and high resistance to pitting and crevice corrosion. The grade has very good corrosion resistance in most organic acids, excellent corrosion resistance in mineral acids, good corrosion resistance in strong alkalis and moderate mechanical strength. * Heat exchangers, coolers, condensers and piping systems in the production of urea, acetic acid, formic acid, nitric acid and methyl methacrylate.