Carbon Structural Steel Square Bars SS400CR

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Shanghai
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TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
120000 m.t./month

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Product Description:

Carbon Structural Steel Square Bars SS400CR

 

Product Specification

1, p ≤0.050%; S ≤0.050%; Cr ≥0.30%

2, Strength of Extension σb ≥400 Mpa

    Yield Strength  σs ≥245(25) Mpa

 

Application

  1, Widely used in construction and engineering structure.

  2, Widely used in making reinforcing steel bar or building plant room rack, high voltage transmission tower, bridge, vehicle, boiler, vessel, ship, etc.

  3, Widely used in manufacturing mechanical parts which do not require high performance.

  4, SS400CR with grade C or D can be used as steel with special use.

 

Product Main Points

1, Heat Treatment: normalizing, annealing, tempering, quenching

2, Surface Treatment: black, bright, polished, galvanized

3, Product Process: hot rolled, cold drawn, forged

  

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Carbon Structural Steel Square Bars SS400CR

 

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Carbon Structural Steel Square Bars SS400CR

 

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Carbon Structural Steel Square Bars SS400CR

Carbon Structural Steel Square Bars SS400CR

 

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Q:What is the difference between 40Cr round steel and 40Cr forging parts?
Generally speaking the 40Cr steel is a kind of hot rolled steel (rarely cold). The need for heating the material before hot rolling process is or rolled, usually heated to above the recrystallization temperature, then condensation formed after the bar, of course I say is very simple, there are many steps.
Q:The 8 thread can replace the beam stirrups by steel
First class steel is HPB235, that is, yield strength is 235mpa, elongation of grade steel is much larger than grade two steel, and the scientific name of grade two steel is HRB335, that is, yield strength is 335mpa, and grade two steel is higher than first grade steel. But also a high level of brittle than steel, as in seismic zone two structure beam is not replaced.
Q:What is the reason that the diameter 130-45 round steel will break after welding?
You say this is a better situation, generally in a few days after welding on the crack, the most afraid of the key parts, to be a major accident. No. 45 steel can not be welded, such as welding, it is necessary to preheat before welding and after welding heat treatment.
Q:Why can't the grounding device be replaced by steel bar instead of round steel?
The mechanical strength of the steel thread is destroyed. Because the supporting point is only the ground, it is easy to cut the steel directly if the thread is not vertical. Therefore, we need to use angle iron, steel pipe or smooth steel round bar.
Q:Round bars and ribbed stirrups are much better
Hot rolled ribbed steel bar with high strength, suitable for large component high-rise buildings under gravity loads, but also because of its surface shape can provide grip and end without hook, the corresponding anchorage length is short, the material.
Q:Grade 1 steel is round steel, grade two steel is ribbed thread steel. Are the weight of the two units the same?
Grade two steel is ribbed steel, but the average diameter is calculated. The chemical composition of grade steel and grade two steel is different, but the density of them is the same. Therefore, the unit weight of grade 1 steel and grade two steel is the same.
Q:Round bar, flat steel, not reinforced?
Flat steel: can be used to make iron, tools and machinery parts, building used as housing structure, escalator.All belong to section steel. Round steel can be used as reinforcing steel, which is often referred to as light round bar and primary steel. Flat steel is finished steel, not steel.
Q:What are the differences between hot rolled stainless steel rounds and cold drawn round ones?
The main differences are in mechanical properties. Forged round steel is used in the processing of some special performance requirements. Round steel three processing methods are more common, should be very wide surface.
Q:Which is stronger, steel pipe or round steel? Which is good at bending?
Round bars are, of course, more powerful, but not much higher.
Q:How to distinguish a round bar from forging? Cold drawing? Hot rolling?
Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Where: 5.5-25 mm small round steel mostly straight bundles of supply, used for steel, bolts and various mechanical parts; greater than 25 mm round steel, seamless steel pipe is mainly used for the manufacture of mechanical parts of the tube, etc..

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