TianGangQ345B round steel profile
Q345A (GB/T 1591-1994)/omega % properties and applications: q345 steel is a kind of material. It is a low alloy steel (c < 0.2%), comprehensive performance is good, good low temperature performance, cold stamping performance, good welding performance and cutting performance ° is widely used in pressure vessels, vehicles, ships, buildings, Bridges, etc. Q represents this kind of material yield, behind the 345, is refers to the material yield value, at around 345. And with the increase of the thickness of the material and reduce the yield value. Analogous to the naming of q235 method. Q345a, q345b, q345c q345d, q345e. And this is the distinction between grade, represents the main impact of temperature is different! Q345a, don't do impact; Grade q345b, impact is 20 degrees at room temperature; Grade q345c, impact is 0 degrees; Q345d grade, is 20 degrees - impact; Q345e level, it is - hit 40 degrees. In the impact of different temperature, impact value is also different.
Round steel series
Combination of steel, carbon steel, die steel, bearing steel, tool steel, spring steel, gear steel, cold-drawn round steel, hot rolled round steel, forging round steel.
Round steel material; 15 #, 8 #, 10 #, 20 #, 25 #, 30 #, 35 #, 45 #, 20 cr, cr, 35 to 40 cr, cr, 45 50 cr, mn, 15, 16 mn (q345b), q345c, q345d, q345e, 50 mn, 65 mn, < p > q235b 15 crmo (a3), 20 crmo, 35 crmo, 42 crmo, 5 crmnmo, 38 crmoal, yf45mnv, cr12 < p > cr12mov, gr15, mn2 40, 45 mn2, 60 si2mn crmnti 20, 20 mntib, ml35, t8a, t9a, t10a, t11a < p > t12a, t13a, 3 cr2w8v, 20 crmnmo, 40 crmnmo, 20 crnimo, 27 simn... ..