Alloy 20 Valves in manual and actuated configurations to API 600/BS1414. Get quotes from verified suppliers on MetalMitra.
- Alloy 20 Valves
- Alloy 20
- Ball Valves
- Gate Valves
- Globe Valves
- Check Valves
- Needle Valves
- Butterfly Valves
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Specifications
| Dimensions | API,BS, EN, ASME |
|---|---|
| Specifications | API 600/BS1414, API 598/BS EN 12266-1, ASME B 16.10, ASME B 16.5, ASME B 16.25, ASME B 16.34 |
| Grade | Alloy 20 – UNS N08020 ) |
| Size | 1/8" to 16" |
| Rating | 150#,300#,600#,800#,1500# |
| End Connection | Screwed [NPT], Socket Weld, Flanged End, Screwed Parallel, Screwed Taper |
Grades & standards
- Alloy 20
- ASME B16.5
- API 600
Chemical composition & mechanical properties
| Ni | Cr | Mo | Cu | Nb | C | Fe |
|---|---|---|---|---|---|---|
| 32.0–38.0 | 19.0–21.0 | 2.0–3.0 | 3.0–4.0 | 8×C – 1.00 | 0.07 | balance |
Single values are maximums unless marked min. Values per ASTM B463 / B464; always confirm against the purchase specification and the mill test certificate.
Need an dependable alloy 20 valve? Alloy 20 Valves on MetalMitra come in manual and actuated configurations to API 600/BS1414, ready for flow isolation and control.
Alloy 20 Valves are flow-control devices used to start, stop, regulate or prevent backflow of liquids and gases in process and utility piping.
Alloy 20 (UNS N08020) was developed specifically to stand up to sulphuric acid. Alloy 20 (UNS N08020) is a niobium-stabilized nickel-iron-chromium alloy with copper and molybdenum, developed for excellent resistance to sulphuric acid and other aggressive chemical environments.
Available forms & variants
- Ball Valves — Quarter-turn valves for quick and tight shut-off.
- Gate & Globe Valves — Isolation and throttling valves for process lines.
- Check Valves — Non-return valves to prevent reverse flow.
- Needle & Butterfly Valves — Fine flow control and large-bore regulation.
Performance highlights
- Sulphuric Acid Resistance — Developed specifically for sulphuric acid service.
- Stress Corrosion Resistance — Good resistance to chloride stress corrosion cracking.
- Niobium Stabilized — Reduced risk of carbide precipitation during welding.
- Good Fabricability — Forms, machines and welds without fuss.
Typical applications
- Chemical Processing
- Sulphuric Acid Plants
- Pharmaceutical
- Petrochemical
- Pickling Equipment
- Food Processing
- Synthetic Fibre Plants
- Heat Exchangers
- Process Piping
- Storage Tanks
- Fabrication
- General Engineering
Quality checks & certification
Every lot of Alloy 20 Valves sourced through MetalMitra can be inspected and documented to the governing standard and your purchase order.
- Dimensional inspection
- Visual inspection
- Grade verification against the order
- Shell and seat pressure testing
- Valve operation testing
- Positive Material Identification (PMI) as applicable
- EN 10204 3.1 Mill Test Certificate
- Third-party inspection (TPI) on request
Why buy through MetalMitra
- Verified suppliers — Mills, manufacturers and stockists are reviewed by the MetalMitra team before they list.
- One RFQ, several quotes — Share size, grade and quantity once and compare offers side by side.
- Full traceability — Heat numbers, EN 10204 3.1 MTCs and third-party inspection on request.
- Delivered worldwide — Export-worthy packing and shipping to India, the Middle East, Africa, Europe and the Americas.
Ready to buy?
Send your size, grade, quantity and delivery location for Alloy 20 Valves, and matching suppliers on MetalMitra will come back with offers.
Technical note: Values on this page are for reference. Always confirm against the governing standard, your purchase specification and the mill test certificate.
Applications & industries
- Chemical Processing
- Sulphuric Acid Plants
- Pharmaceutical
- Petrochemical
- Pickling Equipment
- Food Processing
- Synthetic Fibre Plants
- Heat Exchangers
- Process Piping
- Storage Tanks
- Fabrication
- General Engineering
- Petrochemical & Refining
- Chemical Processing
- Pharmaceutical
- Food & Dairy
Testing & documents
Ask for the documents you need in your requirement — suppliers confirm them in their quotation:
- Mill test certificate to EN 10204 3.1, or 3.2 with third-party witness
- Third-party inspection (TPI) by SGS, Bureau Veritas, TÜV or your nominated agency
- Tests as the standard or your order requires: hydro, PMI, IGC, NDT, hardness or impact tests
Need Alloy 20 Valves?
Share grade, size, quantity and delivery location. We compare suitable suppliers and come back with a clear quotation.
