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ASTM A312/A358/A778 Stainless Steel Pipes Specification
GRADE:TP304/304L, TP316/316L
STANDARD:ASTM A312/A358/A778, ASME B36.19M
O.D.:1/4"~80"
W.T.:SCH-5S, SCH-10S, SCH-40S
WELDING METHOD:TIG or TIG + Plasma or Laser
APPLICATION:Chemical & Petrochemical use etc.
PACKING:Sea Worthy Bundle or Steel Crate
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
316 | Min | – | – | – | 0 | – | 16.0 | 2.00 | 10.0 | – |
Max | 0.08 | 2.0 | 0.75 | 0.045 | 0.03 | 18.0 | 3.00 | 14.0 | 0.10 | |
316L | Min | – | – | – | – | – | 16.0 | 2.00 | 10.0 | – |
Max | 0.03 | 2.0 | 0.75 | 0.045 | 0.03 | 18.0 | 3.00 | 14.0 | 0.10 | |
316H | Min | 0.04 | 0.04 | 0 | – | – | 16.0 | 2.00 | 10.0 | – |
max | 0.10 | 0.10 | 0.75 | 0.045 | 0.03 | 18.0 | 3.00 | 14.0 | – |
Mechanical Properties of 316 Stainless Steel Pipes & Tubes
Table 2. Mechanical properties of ASTM A312/A358/A778 Stainless Steel Pipes.
Grade | Tensile Str(MPa) min | Yield Str0.2% Proof(MPa) min | Elong(% in 50mm) min | Hardness | |
Rockwell B (HR B) max | Brinell (HB) max | ||||
316 | 515 | 205 | 40 | 95 | 217 |
316L | 485 | 170 | 40 | 95 | 217 |
316H | 515 | 205 | 40 | 95 | 217 |
Note: 316H also has a requirement for a grain size of ASTM no. 7 or coarser.
Grade | Density(kg/m3) | Elastic Modulus(GPa) | Mean Co-eff of Thermal Expansion (µm/m/0C) | Thermal Conductivity(W/m.K) | |||
0-1000C | 0-3150C | 0-5380C | At 1000C | At 5000C | |||
316/L/H | 8000 | 193 | 15.9 | 16.2 | 17.5 | 16.3 | 21.5 |
Grade Specification Comparison of ASTM A312/A358/A778 Stainless Steel Pipes
Table 4. Grade specifications for 316 grade stainless steels.
Grade | UNSNo | Old British | Euronorm | SwedishSS | JapaneseJIS | ||
BS | En | No | Name | ||||
316 | S31600 | 316S31 | 58H, 58J | 1.4401 | X5CrNiMo17-12-2 | 2347 | SUS 316 |
316L | S31603 | 316S11 | – | 1.4404 | X2CrNiMo17-12-2 | 2348 | SUS 316L |
316H | S31609 | 316S51 | – | – | – | – | – |
ASTM A312 TP316L Stainless Steel Pipes & Tubes certificates:
