Stainless pipe fitting,stainless fitting,duplex stainless,31803,32750,32760,we are one of largest sour service stainless fitting supplier according to ISO 10156.
ASTM A403 WP316/316L Pipe Fitting
ASTM A403 WP316 is the standard molybdenum-bearing grade, second in importance to 304 amongst the austenitic stainless steels. The molybdenum gives 316 better overall corrosion resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments.
ASTM A403 WP316L the low carbon version of 316 and is immune from sensitisation (grain boundary carbide precipitation). Thus it is extensively used in heavy gauge welded components (over about 6mm). There is commonly no appreciable price difference between 316 and 316L stainless steel.
The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures.
Compared to chromium-nickel austenitic stainless steels, 316L stainless steel offers higher creep, stress to rupture and tensile strength at elevated temperatures.
C&N Supply Complete Range of Products in ASTM A403 WP316 including Elbow, Tee, Reducer, End Caps, Nipple etc.
ASTM A403 WP316 Pipe Fittings Range
| Type | Seamless / Welded / Fabricated |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| Range | ½”NB to 48″NB in Sch 10s, 40s, 80s, 160s, XXS. |
| Dimensions | ANSI/ASME B16.9, B16.28, MSS-SP-43. |
ASTM A403 WP316 Pipe Fittings Chemical Composition
| % | 316 | 316L | 316H | 316Ti |
| C | 0.0-0.07 | 0.0-0.03 | 0.04-0.08 | 0.0- 0.08 |
| Mn | 0.0-2.0 | 0-2.0 | 0.0-2.00 | 0.0-2.00 |
| Si | 0.0-1.0 | 0.0-1.00 | 0.0-1.00 | 0.0- 1.00 |
| P | 0.0-0.05 | 0.0-0.05 | 0-0.04 | 0.0-0.05 |
| S | 0.0-0.02 | 0.0-0.02 | 0.0-0.02 | 0.0-0.03 |
| Cr | 16.50-18.50 | 16.50-18.50 | 16.50-18.50 | 16.50- 18.50 |
| Mo | 2.00-2.50 | 2.00-2.50 | 2.00-2.50 | 2.00- 2.50 |
| Ni | 10.00-13.00 | 10.00-13.00 | 10.00-13.00 | 10.50- 14.00 |
| Ti | – | – | – | 0.40- 0.70 |
| Fe | balance | balance | balance | balance |
| Euronorm | UNS | BS | En | Grade |
| 1.4401 | S31600 | 316S31 | 58H | 316 |
| 1.4404 | S31603 | 316S11 | – | 316L |
| – | S31609 | 316S51 | – | 316H |
| 1.4571 | – | 320S31 | – | 316Ti |
ASTM A403 WP316 Pipe Fittings Mechanical and Physical Properties
Typical Values at 68°F (20°C)
| Grade | Tensile Str (MPa) min | Yield Str 0.2% 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 |
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Co-eff of Thermal Expansion (µm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Elec Resistivity (nΩ.m) | |||
| 0-100°C | 0-315°C | 0-538°C | At 100°C | At 500°C | |||||
| 316/L/H | 8000 | 193 | 15.9 | 16.2 | 17.5 | 16.3 | 21.5 | 500 | 740 |
