37 h stainless steel tube_stainless steel tube_Superb(Shandong)industry and trade co.,ltd

37 h stainless steel tube

author：Superb(Shandong)industry and trade co.,ltd glance over： Publication time：2022/6/28 9:25:21

347H不锈钢管，347H不锈钢无缝管，S34709和0Cr18Ni11Nb钢管厂家

Name: Austenitic Stainless Steel Seamless Pipe

Standards: AISI, ASTM

Type: 347H

UNS number: S34709

Characteristics and application of 347H

37 h austenitic stainless hot strength steel has good corrosion resistance, weldability and hot strength. 347H stainless steel is used for superheater, reheater, steam pipe and heat exchanger pipe fittings in petrochemical industry.

Chemical composition of 347H ①

C: 0.04-0.10

Mn: ≤ 2.00

Si: ≤ 0.75

Cr: 17.0 ~ 19.0

Ni ②: 9.0-13.0

P: ≤ 0.045

S: ≤ 0.03

Nb: (8c ~ 1.00)

Note: ① Unless otherwise indicated, single values are high values; ② When used in some pipe-making processes, the nickel content of some austenitic stainless steels must be slightly higher than the values shown in the table; ③ Casual; ④ The high Ta content is 0.10%; ⑤ The high content is 0.75%; ⑥ The high content is 0.70%

Basic characteristics of 347H stainless steel pipe

(1) having high high-temperature strength and high-temperature plasticity

(2) Excellent oxidation resistance and corrosion resistance

(3) Good organizational stability.

(4) Uniform chemical composition

(5) Good processability and welding performance.

(6) High dimensional accuracy and surface quality.