Investment Casting
Intricate geometry, fine as-cast finish and tight tolerances. The usual route for valve trim, impellers and smaller stainless parts.
Read MoreFor our full range of products and services, choose the relevant catalogue.
Stainless Steel Castings
Kormax supplies custom stainless steel castings to engineers and procurement teams in the USA, Australia and New Zealand, sourced through a network of qualified foundries. Send us the drawing: we’ll recommend the grade and process, then manage tooling, casting, machining and inspection through to delivery.
Custom Stainless Steel Castings, Sand and Investment Cast
We work across the cast stainless grades engineers specify most: austenitic CF8 and CF8M, the low-carbon CF3 and CF3M, martensitic CA15, precipitation-hardened CB7Cu-1, and duplex and super-duplex grades to ASTM A890. Every casting is supplied with the material certification and testing your specification requires.
304 (CF8)304L (CF3)316 (CF8M)316L (CF3M)410 (CA15)17-4 PH (CB7Cu-1)Duplex stainless
This list isn’t exhaustive. For other cast stainless grades, contact the Kormax team.
Stainless Steel Grades
What You Get
Castings to Your Drawing
Stainless castings produced to your drawings or specifications.
Process Selection
Sand or investment casting, plus centrifugal casting in Australia and New Zealand, chosen for your geometry, volume and performance requirements.
Grade Selection
Austenitic, martensitic, duplex or precipitation-hardening, matched to corrosion exposure, strength and service conditions.
Machining & Finishing
Machining, heat treatment, finishing, inspection and logistics, coordinated through one contact.
Qualified Foundry Network
The source best suited to each project, for lower supply risk and production continuity.
Inspection & Certification
ISO 9001-certified foundries, dimensional inspection, material certification and NDT as required.
Stainless Steel Grades We Cast
| Cast Grade | Wrought Equivalent | ASTM Specification | Typically Chosen For |
|---|---|---|---|
| CF8 | 304 | A351 / A743 | General-purpose corrosion resistance and formability |
| CF3 | 304L | A351 / A743 | Welded components; reduced sensitization risk |
| CF8M | 316 | A351 / A743 / A744 | Chloride-exposed service: pumps, valves, marine |
| CF3M | 316L | A351 / A743 / A744 | Welded parts in aggressive service |
| CA15 | 410 | A743 | Higher strength and hardness, moderate corrosion resistance |
| CB7Cu-1 | 17-4 PH | A747 | High strength and dimensional stability |
| CD3MN, CE3MN, CD4MCu | Duplex / super-duplex | A890 (also A995) | High strength with chloride stress-corrosion resistance |
Need CF8M, CF3M or duplex castings? Send us your drawing.Request a Quote
Stainless Steel Sand Casting, Investment Casting and Machining
Also available: Centrifugal casting (AU and NZ)
Need stainless bar rather than castings? 303, 304, 316, 2205 and Nitronic 50 bar, cut to size (AU and NZ)
What We Cast, and Who For
01
Pumps, Valves & Fluid Power
Valve bodies, bonnets, pump casings and impellers in CF8M and CF3M, cast to ASTM A351 for pressure-containing service and machined to your drawing.
02
Water & Wastewater Equipment
Pump volutes, impellers, flanged fittings and screen components for treatment-equipment manufacturers, in CF8M and CF3M for chloride and chemical exposure.
03
Oil, Gas & Power Generation
Valve trim, manifolds, compressor and pump components in duplex CD3MN and super-duplex CE3MN, where strength and stress-corrosion resistance both matter.
04
Mining, Quarrying & Aggregate
Slurry pump casings, impellers and process-plant fittings in CF8M and CD4MCu, for wet, abrasive and corrosive service.
05
Marine & Workboat
Seawater pump and valve bodies, through-hull fittings and deck hardware in CF8M, duplex and super-duplex grades, sand or investment cast to suit section size.
06
Medical & Laboratory Equipment
Instrument housings, frames and structural components for medical and laboratory equipment, in CF3M and CB7Cu-1 where dimensional accuracy matters.
07
Military & Defense
Our stainless steel casting is used for military and defense applications, including vehicle components, marine hardware, equipment housings, and structural parts requiring durability and material traceability.
Where We Supply
Sand and investment casting with machining, supplied into the US.
Sand, investment and centrifugal casting with machining, plus stainless bar and machining stock.
Sand, investment and centrifugal casting with machining, plus stainless bar and machining stock.
Our Process
Kormax has a structured process for stainless steel casting projects to help customers reduce technical, quality, and supply risk. Our team manages each stage, including design review, stainless steel grade selection, foundry sourcing, patternmaking, sampling, inspection, and final production.
By working with Kormax as your stainless steel casting manufacturer and supplier, you gain a lead project contact focused on specification alignment, quality control, and reliable delivery.
1
Step 1
Discover
Part, specification and volumes reviewed at an initial project meeting.
2
Step 2
Define
Project plan set and engineering team briefed.
3
Step 3
Develop
Design optimizations for casting agreed with the customer’s engineers.
4
Step 4
Proposal
Casting method, tooling and pricing options presented.
5
Step 5
Refine
Iterations until all design and quality requirements are met.
6
Step 6
Sign-off
Final drawing signed off and contract details agreed.
7
Step 7
Deliver
Production run and delivery to the agreed dates.
Why Engineers Source Stainless Steel Castings Through Kormax
Stainless steel casting projects require more than access to a foundry. Kormax provides engineers and procurement teams with an experienced provider based on grade selection, casting method, supplier capability, quality management, and ongoing supply.
By combining technical support with a network of qualified foundries, we reduce sourcing risk and deliver components aligned to your specification.
Expert Advice
Grade, process and foundry selection based on design, corrosion exposure and service conditions.
One Coordinated Supplier
Sand and investment casting everywhere, plus centrifugal casting in Australia and New Zealand, across the grades engineers specify.
Qualified Foundry Network
Foundries selected on process capability, capacity, quality systems and project fit.
Supply Continuity
Scheduled supply and multi-foundry options protect lead times on repeat programs.
ISO-Certified Systems
Defined inspection checkpoints, material certification and dimensional checks on every project.
Total Landed Cost
Performance, manufacturability and lead time weighed against cost, beyond the lowest unit price.
Customer Testimonials
Here’s what customers say about working with Kormax on casting and engineered material projects.
Fast, Quality Service
Kormax went above and beyond to expedite 5 x units in a quick turnaround. The quality of the casting, machining, and service I would recommend to anyone.
Nepean
Design Support and Metallurgy Insight
Kormax has exceeded our expectations for our casting supply. They helped enhance our product design, assisted with metallurgy, and offered fast and professional service.
Allfasteners
Clear Communication
Kormax is great to deal with, good with their communications, and never leaves us in the lurch. I would be happy to recommend Kormax.
SATCO
Talk to a Metallurgist About Your Stainless Casting
Kormax’s in-house metallurgy team helps with grade selection, performance requirements and the trade-offs between corrosion resistance, strength, wear and cost, matched to your casting method and service conditions.
FAQs About Stainless Steel Castings
Yes. Most common stainless grades have a cast equivalent: CF8M is the cast form of 316, CF3M of 316L, CA15 of 410 and CB7Cu-1 of 17-4 PH. Cast grades are specified under their own ASTM standards, mainly A351, A743, A747 and A890, and can be sand or investment cast.
Both are the cast equivalent of 316 stainless. CF3M is the low-carbon version (0.03% maximum carbon against 0.08% for CF8M), which reduces the risk of sensitization, so it’s the usual choice for parts that will be welded or that face aggressive corrosive service. CF8M suits most other corrosion-resistant service. If you’re unsure, send us the drawing and the service conditions.
Investment casting suits parts with intricate geometry, fine as-cast finish or tight tolerances, such as valve trim and impellers. Sand casting is more flexible for larger, heavier or simpler parts and has lower tooling cost. In Australia and New Zealand, centrifugal casting suits hollow cylindrical parts. Send your drawing and we’ll recommend the process.
It depends on the casting method and any secondary machining. Investment casting gives the finest as-cast finish, and machining achieves tighter tolerances where they’re needed. We agree the method with you early, against your functional and dimensional requirements.
We work only with qualified foundries, under an integrated management system certified to ISO 9001, ISO 14001 and ISO 45001. Inspection requirements, material certification and documentation are agreed upfront through the PPAP process, before production begins, and castings are supplied with dimensional inspection, material certification and NDT as your specification requires.
A drawing or 3D model, the grade and standard, quantities per order and per year, and any machining, finish, testing or certification requirements. If the grade isn’t settled, describe the service conditions and we’ll recommend one.
It depends on the grade, process, tooling and foundry. We support prototype and low-volume work as well as long-term production programs, and will recommend the most practical approach for your quantities.
Every project is quoted individually. Cost depends on grade, part size and complexity, casting method, tooling, machining, inspection and volume. For what drives casting cost, see our guide How Much Do Metal Castings Cost?.
Lead time depends on part complexity, grade, tooling, foundry capacity, machining, inspection and quantity. We confirm it with your quote, and on repeat orders we schedule supply around your production plan.
Kormax operates an integrated management system certified to ISO 9001 (quality), ISO 14001 (environmental) and ISO 45001 (occupational health and safety).
Yes, in Australia and New Zealand. 303, 304, 316, 2205 duplex and Nitronic 50 bar is stocked and cut to size. See Stainless Steel.