SS400 SM400B H Beam Steel

SS400 according to material grade and name defined in the JIS G 3101 standard, The first S stands for "Steel", the second S stands for "Structure", and 400 for the lower limit tensile strength of 400 MPa. Ordinary structural steel with a tensile strength of 400 Mpa. This steel is the most widely used in JIS standard. SM400B is rolled steel for welding structure, M(Marine escape welding), 400 is also the lower limit tensile strength 400MPa, equivalent to the domestic Q235B.

Products Description

Mechanical Properties of SS400

Thickness	Yield StrengthReH [N/mm2] transv.min.	TensileStrengthRm [N/mm2]transv.	Fracture Elongation[%] transv. min.	Notch Impact Energy1)Ch Vcomplete samplelongitud. min [J]
t≤ 16mm t >16mm	235 225			20 degree 27J
t < 3mm t ≥ 3mm		360-510 340-470
Up to 1.5mm 1.51-2.00mm 2.01-2.50mm 2.51-2.99mm ≥ 3mm			16 17 18 19

Grade	SM400B Mechanical Property
Grade	Thickness	Yield	Tensile	Elongation
SM400B	mm	Min Mpa	Mpa	Min %
	t≦16	245	400-510	18
	16<t≦90	215-235	400-510	24

H beams and I beams are two different types of structural steel members that are commonly used in construction. The distinguishing feature between them is their shape. An H beam is shaped like the letter "H" with one vertical flange and two long-side flanges, whereas an I beam has a cross-section that resembles the letter "I" with a single vertical web or web thickest at mid-span, two webs, and no bottom flange.

These steel members have similar mechanical properties but differ in dimensional characteristics.

H-beams are more efficient than I-beams because they are better at carrying bending and shear loads. H-beams have a thicker, deeper web, which means that they can better support the weight of an object placed on top of them. This also helps balance out any cantilevered loads that might be placed on an H-beam in the future (such as additional floors or beams). In addition to having greater section modulus – which means that they are able to resist compression forces better than I-beams do – they also have greater tensile strength values, meaning that they're less likely to bend under pressure from tension forces acting upon them.

To short, the main difference between an H-beam and an I-beam is that the web of an H-beam is much thicker than that of an I-beam. A thicker web means a stronger beam, which allows for more load-bearing capacity. This means that for the same amount of structural support, you can use fewer H beams than I beams.

Product Details

Product Name	SS400 SM400B h beam steel
Length	As your required
Standard	ASTM/ GB/ JIS/ EN ect.
Delivery Time	According to your quantity
Payment Terms	FOB/ CIF/ EXW/ DDP
Origin	China
Sample	Yes
Tolerance	±0.3
Packing	Packed with steel belts tightly, in bundle

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