JIS B2312 Standard SS304 Elbow Seamless Pipe Fittings for Water Industry
JIS B2312-1997 Steel butt-welding pipe fittings
This Standard specifies the steel and nickel-chromium ferro-alloy seamless pipe fit-tings to be fitted by butt-welding, mainly to pressure service pipings, high pressure service pipings, high temperature service pipings, alloy steel pipings, stainless steel pipings, low temperature service pipings, and steel pipes for fired heaters.
JIS B2312 is a Japanese Industrial Standard for pipe fittings, including elbows. SS304 refers to stainless steel grade 304, which is a common type of stainless steel used in various industrial applications.
Therefore, a JIS B2312 SS304 elbow would be a stainless steel elbow fitting that conforms to the JIS B2312 standard and is made from grade 304 stainless steel. This type of elbow is typically used in piping systems for its corrosion resistance and durability.
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| SS 304 | 1.4301 | S30400 | SUS 304 | 304S31 | 08Х18Н10 | Z7CN18‐09 |
X5CrNi18-10 |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Composition Chart of 304 Stainless Steel 90 degree Elbow
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
|---|---|---|---|---|---|---|---|---|---|---|
| 304 | min. | – | – | – | – | – | 18.0 | – | 8.0 | – |
| max. | 0.08 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | 0.10 | ||
| 304L | min. | - | - | - | - | - | 18.0 | - | 8.0 | - |
| max. | 0.030 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 12.0 | 0.10 | ||
304 SS Reducer Mechanical Properties Chart
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
|---|---|---|---|---|---|
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 304 | 515 | 205 | 40 | 92 | 201 |
| 304L | 485 | 170 | 40 | 92 | 201 |
JIS B2312 SS304 elbow is commonly used in various industries for piping systems where a change in direction is required. Some of the common applications of JIS B2312 SS304 elbow include:
1. Plumbing and water supply systems: JIS B2312 SS304 elbow is used in plumbing and water supply systems to change the direction of the flow of water in pipes.
2. Chemical processing plants: JIS B2312 SS304 elbow is used in chemical processing plants to change the direction of the flow of chemicals in pipelines.
3. Food and beverage industry: JIS B2312 SS304 elbow is used in food and beverage processing plants to change the direction of the flow of food products in pipelines.
4. Pharmaceutical industry: JIS B2312 SS304 elbow is used in pharmaceutical plants to change the direction of the flow of pharmaceutical products in pipelines.
5. Petrochemical industry: JIS B2312 SS304 elbow is used in petrochemical plants to change the direction of the flow of oil, gas, and other petrochemical products in pipelines.
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