Stainless Steel 304 Seamless Pipes and Tubes Specification
Standard | UNS | Werkstoff NR. |
SS 304H | S30409 | 1.43 |
Chemical Composition
SS | 304H |
Ni | 8-11 |
Fe | Balance |
Cr | 18-20 |
C | 0.04-0.10 |
Si | 0.75 max |
Mn | 2 max |
P | 0.045 max |
S | 0.030 max |
N | 0.030 max |
Mechanical Properties
Grade | 304H |
Tensile Strength (Mpa) min | 515 |
Yield Strength 0.2% Proof (Mpa) min | 205 |
Elongation (% in 50 mm ) min | 40 |
Hardness | |
Rockwell B (HR B) max | 92 |
Brinell (HB) max | 201 |
Grade Specification
Grade | UNS No | Old British BS | En | Euronorm No | Name | Swedish SS | Japanese JIS |
304H | S30409 | 304S51 | | 1.4948 | X2CrNi19-11 | | |
Physical Properties
Grade | Density (kg/m3) | Elastic modulus (Gpa) | Mean coefficient of thermal expansion (m/m0C) | Thermal conductivity (W/m.k) | Specific Heat 0-1000C(J/kg.K) | Electrical Resistivity (n.m | |||
304H | 8000 | 193 | 0-1000C | 0-3150C | 0-5380C | At 1000C | At 5000C | 500 | 720 |
17.2 | 17.8 | 18.4 | 16.2 | 21.5 |