S355J2G3 Q345R Angle Channel

S355J2G3 is a European standard steel, the composition is: C ≤0.20, Si≤0.55, Mn ≤1.60, P≤0.035, S≤0.035. The beginning of S is structural steel, 355 means that the minimum yield strength is 355MPa. J2G3 means that the delivery state is normalized, the impact work of -20℃ is 27J, G3 and G4 are the meaning of the characterization of deoxidation mode. S355J2G3 indicates semi-killed steel. Q355D is a low-alloy high-strength steel plate, which is often used in the machinery manufacturing industry For example; Crane, hydraulic press, construction machinery, heavy machinery, bridge structure, head, mechanical parts, steel structure, large forklift, agricultural machinery, etc

1.Products Description

S355J2G3

Steel Category: weather-resistant structural steel
Steel standard:EN10025-2
Steel grade:EN10025 S355J2G3
Dimension: Thickness 5-300mm, Width 1500-3500mm, Length 3000-12000mm
Application: Mainly used for making axles, bolts and connecting rods, motor, hydraulic and pump shafts, machinery parts etc.

Q345R Steel Plate Welding Feature:

When yield ratio is ≤ 0.75, more than 0.8 might have higher risk of crack forming. Preheating of steel plate welding is not required. When steel plate thickness is ≤34, preheat to 100 ~ 150 ℃ when steel plate thickness is > 34, additionally eliminate stress is needed after welding heat treatment, heating temperature range 600 ~ 640 ℃, usually air cooling after the heat preservation furnace cooling to under 400 ℃.

When the carbon content of partial minimum Q345R steel welding basic no strict limits on line, for it is overheating sensitivity is not high, cold cracking tendency is low, but for the goodness of plasticity and toughness overheated zone, small linear energy is better.

When welding Q345R steel of carbon content on the high side, for the hardening tendency increases, the content of martensite increases, it will cause the string cable energy cold cracking tendency increase, embrittlement of overheated zone also become serious, this situation is offline energy partial bigger is better.

2.Products Details

Product Name	S355J2G3 Q345R angle channel
Length	as your requested
Alloy or Not	Not
Standards	JIS, ASTM, GB, EN,etc.
Packing	in bundle,packed with steel belts tightly
Surface	Painted;Galvanized;Weld
Origin	China
Price Term	FOB, CIF, EXW,DDP, etc.
Delivery Time	3-30 days,according to your quantity

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3.Customer Visit:

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4.About us

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excellent design and processing team, carefully crafted and refined.

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