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  Austenitic stainless steel UNS grade: S30409 General material grade: 304H
Serial number category Material grade Reference standards Chemical composition Mechanical properties
C Mn P S Si Ni Cr N     other yield Stretch Elongation hardness Section Heat treatment/
Strength σ0.2 strength (Vertical) Shrinkage Quench Media
% % % % % % % % % % % (MPa) (MPa) % HBW (%) ℃/cooling
1 American standard pipe fittings WP304H ASTM A403/403M-20 0.04-0.10 ≤2.00 ≤0.045 ≤0.030 ≤1.00 8.0-11.0 18.0-20.0         ≥205 ≥515 ≥28     ≥1040℃/water cooling
2 American Standard Steel Pipe TP304H ASTM A312/312M-21 0.04-0.10 ≤2.00 ≤0.045 ≤0.030 ≤1.00 8.0-11.0 18.0-20.0         ≥205 ≥515 ≥35     1040℃/water cooling
3 American Standard Plate 304H ASTM A240/A240M-20 0.04-0.10 ≤2.00 ≤0.045 ≤0.030 ≤0.75 8.0-10.5 18.0-20.0         ≥205 ≥515 ≥40 ≤201    
4 American Standard Forgings F304H ASTM A182/182M-21 0.04-0.10 ≤2.00 ≤0.045 ≤0.030 ≤1.00 8.0-11.0 18.0-20.0         ≥205 ≥515 ≥30   ≥50 1040℃/water cooling
5 National standard pipe fittings SF304H GB/T13401-2017 0.04-0.10 ≤2.00 ≤0.045 ≤0.030 ≤1.00 8.00-11.00 18.00-20.00         ≥205 ≥515 ≥30 ≤201   Solution treatment
6 National standard steel pipe                                      
7 National standard forgings 07Cr19Ni10 NB/T47010-2017 0.04-0.10 ≤2.00 ≤0.035 ≤0.015 ≤1.00 8.00-11.00 18.00-20.00         ≥220 ≥520 ≥35 ≤180   1010-1150℃ /water cooling
(S30409) ≥500 ---
8 European standard sheet 1.4948 EN10028-7:2016 0.04-0.10 ≤2.00 ≤0.035 ≤0.015 ≤1.00 8.0-11.0 17.0-19.0 ≤0.10       0.2≥230/1.0≥260 ＜8,530-740 ≥45   at20℃ 1050-1110℃/water cooling
0.2≥210/1.0≥250 ≥8,510-710 ≥100
0.2≥190/1.0≥230    
9 European standard forgings 1.4948 EN10222-5:2017 0.04-0.10 ≤2.00 ≤0.035 ≤0.015 ≤1.00 8.0-11.0 17.0-19.0 ≤0.10       σ0.2≥195 490-690 ≥45   at20℃ 1050-1120℃/water cooling
σ1.0≥230 ≥100