304h stainless steel tube carbon content 0.04-0.1%; Ni: 8-11; other nominal content and 304 the same. 304H stainless steel pipe with a good bend, welding process performance, corrosion resistance, high durability and stability of the organization, cold deformation capacity is very good. The use of temperature up to 650 ℃, the maximum oxidation temperature of up to 850 ℃.

Application: used in the manufacture of large generating units boiler superheater tube, reheater tube, steam pipes and petrochemical heat exchange tubes. The allowable oxidation temperature for the boiler tube is 705 ° C.

Compare:

1,304L:

It is excellent in intergranular corrosion and is suitable for manufacturing parts that do not carry out heat after welding.

Element content: C: 0.03 Si: 1.0 Mn: 2.0 P: 0.045 S: 0.03 Ni: 9.0-13.0 Cr: 18.0-20.0

2,304M:

Good anti-corrosion ability, better pumping line performance.

Element content: C: 0.06 Si: 1.0 Mn: 2.0 P: 0.045 S: 0.03 Ni: 8.0-10.0 Cr: 18.0-20.0

3,304HC:

Better cold workability, good corrosion resistance

Element content: C: 0.08 Si: 1.0 Mn: 2.0 P: 0.045 S: 0.03 Ni: 8.0-10.0 Cr: 17.0-19.0.

304HC increased the copper Cu 2.0 above the content to achieve better cold workability.

4,304ES:

Low nickel content, corrosion resistance slightly worse., 04ES is the wisdom of the Chinese people get out of the cut corners of a material, containing Ni low, 304ES equivalent to 301 materials.

Element content: C: 0.15 Si: 1.0 Mn: 2.0 P: 0.045 S: 0.O3 Ni: 6.0-8.0 Cr: 17-19.

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