True Grade Metals Verified alloy sourcing · Australia Request material

Materials

Nineteen grades, in pipe and tube, fittings, bar and rod, sheet, plate and coil, and wire. Every grade below carries the substitution risk we watch for and the test regime we specify against it, because the grade you ordered and the grade that arrives are not the same question.

Supplied in

  • Pipe & tube
  • Fittings
  • Bar & rod
  • Sheet & plate
  • Coil
  • Wire

19 grades

Grades, designations and the substitution risk for each
Grade UNS W.Nr Family Substitution risk
Hastelloy C-22 N06022 2.4602 Superalloy C-22 and C-276 are cross-sold in both directions
Hastelloy C-276 N10276 2.4819 Superalloy Molybdenum is the substitution tell on C-276
Incoloy 800H N08810 1.4958 Superalloy 800H is 800 only if carbon and grain size both hold
Incoloy 825 N08825 2.4858 Nickel alloy A 904L substitution reads almost right until you measure nickel
Inconel 625 N06625 2.4856 Superalloy Niobium and molybdenum are the cost, so they are the thinning risk
Inconel 718 N07718 2.4668 Superalloy Chemistry proves nothing here; the heat treatment is the grade
Monel 400 N04400 2.4360 Nickel alloy Nickel costs four times copper, and the ratio is the alloy
Super duplex 2507 S32750 1.4410 Grade-critical stainless Duplex fails on structure while the chemistry still reads clean
904L N08904 1.4539 Grade-critical stainless Diluted on nickel, because nickel is most of what it costs
Duplex 2205 S32205 1.4462 Grade-critical stainless The wider S31803 windows still ship against 2205 orders
Hastelloy B-2 N10665 2.4617 Superalloy The weld zone is where B-2 gives way, not the plate
Hastelloy B-3 N10675 2.4600 Superalloy B-2 and B-3 both quote as "Hastelloy B" and are not equivalent
Hastelloy X N06002 2.4665 Superalloy Carbon sits in a band, so a chemistry check against a maximum passes it
Incoloy 800 N08800 1.4876 Superalloy The risk runs backwards: 800 sold against an 800H requirement
Incoloy 925 N09925 — Superalloy Bought for sour service, qualified by hardness, not chemistry
Inconel 600 N06600 2.4816 Superalloy A 72 % nickel floor is expensive to hold honestly
Inconel 601 N06601 2.4851 Superalloy Without its aluminium, 601 is 600 at a premium
Inconel X-750 N07750 2.4669 Superalloy An under-aged spring relaxes in service and tests fine cold
Monel K-500 N05500 2.4375 Nickel alloy Over-ageing buys strength and hydrogen embrittlement together