Stockist & supplier ASTM B127 · ASME SB-127
Monel 400 & K500 Plates — ASTM B127
Monel 400 and K500 plates are nickel-copper alloy plates for seawater, hydrofluoric acid and alkali service. Teshi Group stocks and supplies UNS N04400 plate to ASTM B127, and UNS N05500 (K500) plate against order. Quotes are sent in 24–48 hours.
Also called: Monel 400 plate, Monel K500 plate, UNS N04400 plate, UNS N05500 plate, nickel-copper alloy plate
What are Monel 400 & K500 Plate?
Monel is a trade name; alloy 400 is UNS N04400 and alloy K-500 is UNS N05500. Alloy 400 is a nickel-copper alloy with about two-thirds nickel and one-third copper, resistant to seawater, brackish water, hydrofluoric acid, alkalis and many organic acids. Its plate, sheet and strip are covered by ASTM B127. Alloy K-500 adds aluminium and titanium so that it can be age-hardened for much higher strength while keeping similar corrosion resistance; ASTM B865 covers K-500 bar, rod and forgings, so plate is supplied to the mill's or purchaser's specification.
Key features
- Stockist and supplier — sourced from nickel alloy mills; Teshi does not manufacture plate
- UNS N04400 plate, sheet and strip to ASTM B127 / ASME SB-127
- UNS N05500 (K500) plate against order, to mill or purchaser specification
- Resistant to seawater and hydrofluoric acid
- Hot-rolled annealed plate; other sizes supplied against order
- Matching nickel alloy flanges manufactured by Teshi against order
Specification
| Supply | Stockist & supplier — Teshi Group, India |
|---|---|
| Standards | ASTM B127 / ASME SB-127 (N04400 plate, sheet, strip) |
| Grades | UNS N04400 (alloy 400); UNS N05500 (alloy K-500) against order |
| Product forms | Hot-rolled plate 3/16 in (4.8 mm) and thicker; sheet and strip; other sizes supplied against order |
| Condition | Hot-rolled annealed (400); annealed or age-hardened as ordered (K500) |
| Other plate grades stocked | Carbon / boiler: IS 2062 E250–E450, ASTM A36, A516 Gr 60 / 70, A537; Cr-Mo: ASTM A387 Gr 11, 12, 22, 91; stainless: ASTM A240 304 / 304L / 304H, 309S, 310S, 316 / 316L / 316H / 316Ti, 317L, 321 / 321H, 347 / 347H, 410, 430, 904L, 254 SMO; duplex S31803 / S32205; super duplex S32750 / S32760; nickel: Monel 400 (B127), Inconel 600 (B168), Inconel 625 (B443), Incoloy 800 / 800H / 800HT (B409), Incoloy 825 (B424), Hastelloy C276 / C22 (B575), Hastelloy B2 / B3 (B333), Alloy 20 (B463), Nickel 200 / 201 (B162); titanium Gr 1, 2, 5, 7, 12 (B265); Cu-Ni 90/10, 70/30 (B171) |
| Testing | Chemical and tensile tests per the standard |
| Documents | Mill test certificate to EN 10204 3.1; EN 10204 3.2 / third-party inspection when the order specifies |
Applications
- Seawater systems and marine hardware
- Hydrofluoric acid alkylation units
- Brine heaters and evaporators
- Caustic and alkali handling
- Boiler feed-water heaters
Chemical composition — alloy 400 (ASTM B127)
| UNS | Ni | Cu | Fe | Mn | C | Si | S |
|---|---|---|---|---|---|---|---|
| N04400 | 63.0 min | 28.0–34.0 | 2.5 | 2.0 | 0.3 | 0.5 | 0.024 |
Maximum unless a range or minimum is shown; % by weight. Per ASTM B127.
Mechanical properties
| UNS / condition | Tensile, min (MPa) | Yield 0.2%, min (MPa) | Elongation, min (%) |
|---|---|---|---|
| N04400 hot-rolled plate, annealed | 485 | 195 | 35 |
Per ASTM B127.
Technical data sheets
Dimensions & weights
FAQ
Monel 400 & K500 Plate: common questions
Is Monel a grade name?
Monel is a trade name. Order by UNS number: N04400 for alloy 400 and N05500 for alloy K-500. Plate for alloy 400 is supplied to ASTM B127, which covers plate, sheet and strip.
What is the difference between Monel 400 and K500?
K500 contains aluminium and titanium and can be age-hardened to much higher strength. Corrosion resistance is similar. 400 is used for vessels and piping; K500 for pump shafts, fasteners and springs.
Which ASTM standard covers K500 plate?
ASTM B865 covers K-500 bar, rod, wire and forgings, not plate. K-500 plate is supplied to the producing mill's specification or to the purchaser's specification.
Does Teshi manufacture Monel plate?
No. Teshi Group is a stockist and supplier of Monel 400 and K500 Plate, sourced from established mills and supplied with the original mill test certificate. Teshi is an OEM manufacturer of flanges, fittings, fasteners, valves and custom fabrications, which can be ordered with it.
Need a size or grade not listed here?
We source against your specification from approved mills, with mill test certificates and inspection before dispatch.
Send us your specificationTraceability
From mill heat to your site
- 01
Approved mill material
Received against the mill certificate; heat number registered.
- 02
Forging & machining
Heat number carried through every stage in our Indian works.
- 03
PMI, dimensional & NDT
Every lot inspected to the governing standard; TPI witness on request.
- 04
Stamped & certified dispatch
Hard-stamped pieces with EN 10204 3.1 / 3.2 certificates.
Quick RFQ
Quote for Monel 400 & K500 Plate in 24–48 hours
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