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Home Material SS 14 2338
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Grade 2338
Corresponding Standard SS 14 2338
Stainless steel – SS steel 23 38
Classification Austenitic Stainless Steel
2338 Chemical Element Composition Content (%)
Component C ① Si Mn P S Cr Ni ② More
Minimum Value - - - - - 17 9 Nb:10C~1
Maximum Value 0.08 1 2 0.045 0.03 19 12
① For steel to be used at temperatures within the creep range, a minimum of 0.04% C applies.
② For pipes, max. 13.0%.
2338 Mechanical Properties
Product Mark
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Specified Plastic Yield Strength
Rp0.2
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW
Pipe；t≤10 2338-02 Annealing 510~710 ≥220 Rp1.0
≥250		 A5
≥35		 ≤210
Pipe；t＞10 2338-02 Annealing 510~710 ≥200 Rp1.0
≥230		 A5
≥35		 ≤210
Seamless Tube；t≤10 2338-22 Annealing 510~710 ≤220 Rp1.0
≥250		 A5
≥35		 ≤210
Seamless Tube；t＞10 2338-22 Annealing 510~710 ≥200 Rp1.0
≥230		 A5
≥35		 ≤210
Welding tube 2338-23 Annealing 510~710 ≥220 Rp1.0
≥240		 A5
≥35		 ≤210
Seamless Tube；t≤10 2338-24 Annealing 510~710 ≥220 Rp1.0
≥250		 A5
≥35		 ≤210
Seamless Tube；t＞10 2338-24 Annealing 510~710 ≥200 Rp1.0
≥230		 A5
≥35		 ≤210
Welding tube 2338-25 Annealing 510~710 ≥220 Rp1.0
≥250		 A5
≥35		 ≤210
Bar, forging；t≤50 2338-27 Annealing 510~710 ≥220 Rp1.0
≥250		 A5: ≥35
A10: ≥30		 ≤210
Bar, forging；50＜t≤100 2338-27 Annealing 510~710 ≥200 Rp1.0
≥230		 A5
≥35		 ≤210
Plate, strip；t≤30 2338-28 Annealing 510~710 ≥220 Rp1.0
≥250		 A5: ≥35
A10: ≥30		 ≤210
Plate, strip；30＜t≤50 2338-28 Annealing 510~710 ≥200 Rp1.0
≥230		 A5
≥35		 ≤210
Plate, strip；t≤30 2338-29 Cold-drawn 550~750 350~450 Rp1.0
380~530		 A5
≥30		 ≤240
1 Approximate Comparison Table
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS
06Cr18Ni11Nb S34778 347 SUS 347 STS 347 347 S34700 X6CrNiNb 18-10 X6CrNiNb 18-10
(X10CrNiNb18-9) 		1.4550 Z6CNNb 18-10 X6CrNiNb 18-10 1.4550 08Х18Н12Б 2338 347S17
347S31
2 Approximate Comparison Table
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS
06Cr18Ni11Nb
(0Cr18Ni11Nb) 		S34778 347 SUS 347 STS 347 347 S34700 X6CrNiNb 18-10 X6CrNiNb 18-10
(X10CrNiNb18-9) 		1.4550 Z6CNNb 18-10 X6CrNiNb 18-10 1.4550 08Х18Н12Б 2338 347S17
347S31

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