14307 X2CrNi19-11 304L S30400 A193 B8A A320 B8A
ASTM specification A193 grade B8A A320 grade B8A defines the technical characteristics of stainless steel fasteners suitable for application in pressure vessels and in the presence of high or low temperature (service temperatures -196°C to 800°C); this type of fasteners is widely used in the chemical petroleum extraction and energy plant sectors.
It differs from ASTM A193 B8A A320 B8 by the fact that the parts in the finished state undergo solution treatment to achieve final hardness in the 90-192 HB range.
Mass density: g/cm³ 20°C – 7.9
Modulus of elasticity: N/mm2 20°C – 200,000
Thermal conductivity: W/m.K. (20°C) – 14.6
Specific heat: J/g.K. (20°C) – 500
Coefficients of linear expansion: 20° – 200°C – 16.5, 20° – 400°C – 17.5, 20° – 600°C – 18.5
Electrical resistivity: Ω mm²/m 20°C 0.73
It is not magnetic
CORRESPONDENCE ASTM A193 B8A A320 B8A
| EN 10088/3 | W | JIS | AISI |
|---|---|---|---|
| X 2 Cr Ni 1811 X 2 Cr Ni 1811 | 1.4307 – 1.4306 | G4303 – SUS304 | 304 L |
MECHANICAL CHARACTERISTICS ASTM A193 B8A
| Grade | Size | Rm Mpa | Rp 02 Mpa | E% | RA |
|---|---|---|---|---|---|
| B8A | All diameters | 515 | 205 | 30 | 50 |
CHEMICAL COMPOSITION ASTM A193 B8A
| C max | S max | P max | Yes max | Mn max | Cr | Ni |
|---|---|---|---|---|---|---|
| 0.08 | 0.03 | 0.045 | 1.0 | 2.0 | 18.0-22.0 | 8.0-11.0 |