Oppy Heat Treatment & Consulting Metallurgists
Delivering quality heat treatment since 1961.
Specialist heat treatment for industrial manufacturers and toolmakers — serving South-East Melbourne and beyond.
Since 1961
Over 60 years of heat treatment expertise. Three generations of the Oppy family — the same dedication, the same address.
Ford Certified
Australia's only company to earn heat treatment supplier qualification for Ford Motor Company (AMTD-DC2010).
Australia's First 10 Bar Vacuum Furnace
Investing in the latest capability since day one. Precision results on the most demanding specifications.
Services & Processes
Oppy Heat Treatment specialises in:
Hardening
Increase hardness and wear resistance of steel components.
Nitriding
Including the specialist NiRich process for surface hardening.
Annealing
Soften, relieve stresses, or improve machinability.
Stress Relieving
Reduce residual stresses after machining or welding.
Carburising
Add carbon to the surface of low-carbon steels.
Tempering
Reduce brittleness after hardening for toughness balance.
Normalising
Refine grain structure and improve mechanical properties.
Tool Steel Treatment
Specialist treatment for cutting tools and dies.
Vacuum Heat Treatment
Clean, controlled atmosphere for distortion-critical work.
High Speed Treatment
For high-speed steels used in cutting applications.
Salt Bath Treatment
Efficient uniform heating in molten salt media.
Family-owned since 1961.
James Oppy founded the business in Little Lonsdale Street, Melbourne in 1961. His son Jonathan — a certified metallurgical engineer — took over in 1980, implemented Australia's first 10 Bar Vacuum furnace, and led Oppy to become Australia's only Ford-qualified heat treatment supplier.
Today, the business operates from Pakenham in South-East Melbourne, still family-run, still doing the same work with the same care.
Read the full history
Materials
Oppy treats a wide range of tool and mould steels. Commonly specified grades:
Mould Steels
- 2767 — plastic moulds, die cast tools, rubber moulds
- H13 — aluminium & magnesium extrusion, die cast tools
- P20 — plastic moulds, zinc die casting dies, bolsters
- 420 — corrosive plastic moulds, high polishability
- 2316 — pre-hardened, high chromium, corrosion resistant
Tool Steels
- O1 — press tools, gauges, jigs & fixtures
- A2 — forming, blanking & piercing tools
- D2 — blanking tools, deep drawing, excellent toughness
- D3 — maximum abrasion resistance for blanking tools
- S1 — heavy duty punches, dies, coining dies
Friendly service, fast turnaround and very helpful, even to a small business as mine. These guys are the best.
Bernard Paul
Google Review · 5/5
Get in Touch
Oppy Heat Treatment & Consulting Metallurgists
Pakenham, VIC 3810
Australia
Some GPS systems incorrectly describe a section of Greenhills Road as Bourke Road. Use Google Maps and search “TC BOXES” — we are next door on the eastern side.
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