What is the difference between ASTM 338 GR1 and GR2 titanium tube?
GR2 tensile strength greater than 345, yield is 275-450, as for the price, the two are almost the same, 100 one kilogram can not buy, the water is generally used in 0.5 wall thick pipe, the price of more than 200, TA9 is GR7, the price is not 600
ASTM B338 requires GR1 tensile strength greater than 240, yield strength 140-310;
GR1 and GR2 are not used in seawater, the general situation is GR2, GR2 strength higher than GR1
