SS 310 / 310S CrossASTM A403 · ASME B16.9 · Manufacturer, stockist & exporter, India
AISI 310S · UNS S31008
An SS 310 / 310S cross is a four-way fitting with branches at 90°, made from SS 310 / 310S to ASTM A403 WP310S (buttweld) · ASTM A182 F310 (forged). Crosses join four pipes in one fitting. They are used less than tees because of stress concentration, but save space in fire-water and utility systems.
- ASTM A403
- ASME B16.9
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is an SS 310 / 310S Cross?
- What it is
- A four-way fitting with branches at 90°
- Material
- ASTM A403 WP310S (buttweld) · ASTM A182 F310 (forged)
- Dimensions
- ASME B16.9 · B16.11
- Grade
- SS 310 / 310S · UNS S31008
- Best at
- Furnaces, burners and heat treatment at high temperature
SS 310 / 310S Cross Specification
| Product | SS 310 / 310S Cross |
|---|---|
| Material standard | ASTM A403 WP310S (buttweld) · ASTM A182 F310 (forged) |
| Dimensional standard | ASME B16.9 · B16.11 |
| Sizes | Buttweld ½" – 48" · forged ⅛" – 4" |
| Wall / class | Schedule to match pipe · Class 3000 / 6000 (forged) |
| Ends | Bevelled to ASME B16.25 |
| Testing | PMI · dimensional · NDT and IGC on request |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
When to Choose a Cross
Crosses join four pipes in one fitting. They are used less than tees because of stress concentration, but save space in fire-water and utility systems.
- Equal and reducing
- Buttweld and forged
- Less common than tees
SS 310 / 310S Cross Chemical Composition
| Element | Weight % |
|---|---|
| Chromium | 24.0 – 26.0 |
| Nickel | 19.0 – 22.0 |
| Carbon | 0.08 max |
| Manganese | 2.00 max |
| Silicon | 1.50 max |
| Phosphorus | 0.045 max |
| Sulphur | 0.030 max |
| Iron | Balance |
SS 310 / 310S Cross Mechanical Properties
| Annealed plate & sheet | Value |
|---|---|
| Tensile strength | 515 MPa · 75 ksi |
| Yield strength 0.2% | 205 MPa · 30 ksi |
| Elongation | 40% |
| Hardness | 217 HB max |
Full chemistry, properties and equivalents are on the SS 310 / 310S grade page.
Other SS 310 / 310S pipe fittings
SS 310 / 310S Crosss for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiSS 310 / 310S Cross — questions buyers ask
Why are crosses less common than tees?
They concentrate stress at four junctions; most designers use two tees unless space is critical.
Which standard covers SS 310 / 310S crosss?
The material is ASTM A403 WP310S (buttweld) · ASTM A182 F310 (forged); dimensions follow ASME B16.9 · B16.11. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a SS 310 / 310S cross?
The alloy price, the size and schedule or class, quantity, and the testing and documents required. Send your list and we quote the same working day.
What documents do you supply?
EN 10204 3.1 mill certificates as standard, 3.2 with third-party inspection on request, plus dimensional and PMI reports.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026