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GBT3094-Q235C SQUARE TUBE chemical composition：
C         Mn         Si           S                 P
≤0.22  ≤1.4      ≤0.35     ≤0.050         ≤0.045
　　　GBT3094-Q235C SQUARE TUBE specification hardened tool steel
　　　Quenching temperature is 950 ℃, salt bath furnace heating, 10% NaCl brine cooling quenching
　　　GBT3094-Q235C SQUARE TUBE Mechanical properties:
　　　Modulus（E/Gpa）：200~210
　　　Poisson's ratio（ν）：0.25~0.33
　　　Tensile strength（σb/MPa）：375-500
　　　Elongation（δ5/%）：≥26（a≤16mm）Wherein a thickness or diameter of the steel.
Purpose:
1, widely used in construction and engineering structures. Or construction of plants for the production of steel house frames, high-voltage transmission towers, bridges, vehicles, boilers, containers, ships, etc., but also on the performance requirements for a large number of mechanical parts is not too high. C, D grade steel can also be used for certain professional steel.
2, can be used to handle a variety of abrasive grinding tools and other unimportant parts.
3, the use of punch made ​​of Q235 steel material after quenching and tempering is not used directly, hardness 36 ~ 40HRC, to solve the punch in the use of fragmentation phenomenon.
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