Used Lam Altus CVD: What Nobody Tells You About Buying Tungsten Fill Tools

This guide is for: The process engineer or equipment buyer looking at used tungsten CVD tools who doesn't realize that WF6 has been quietly destroying the chamber internals since the tool was decommissioned.

Three years ago I moved an Altus MAX from a 300mm fab in Oregon to a buyer in Malaysia. Tool looked clean. Seller provided maintenance records. Buyer took delivery, hooked up WF6 — and started getting 200+ particles per wafer on day one. The showerhead had micro-pitting from WF6 exposure that wasn't visible during a visual inspection. Replacement cost: $28K for the showerhead plus two weeks of chamber conditioning. The buyer had budgeted zero for this.

Tungsten CVD is unforgiving. WF6 is corrosive, toxic, and leaves its mark on every surface it touches. Buy a used Altus without understanding this and you'll spend $30K-$60K learning the lesson the hard way.

Pick Your Platform: Altus M vs MAX vs XP

The Altus M is the workhorse — standard tungsten fill for contacts and vias at 90nm and above. Used pricing sits between $400K and $650K. Good availability on the secondary market because these tools ran in massive volumes and many fabs have upgraded.

The Altus MAX added pulsed nucleation layer (PNL) capability for better step coverage at advanced nodes. These command $650K to $900K used. If your process requires sub-65nm tungsten fill, this is your tool.

The Altus XP is the latest generation with enhanced PNL and lower resistivity fills. Limited used supply — $900K to $1.1M when they appear, which isn't often. Unless you absolutely need the XP's process capability, the MAX gives you 90% of the performance at 30% less cost.

The Showerhead Is the Deal-Breaker

Every Altus transaction I've done comes down to showerhead condition. WF6 attacks the showerhead gas distribution holes, causing gradual enlargement and non-uniform flow. The result is thickness variation and particle generation.

A new showerhead costs $18K-$35K depending on the model. After 15,000-20,000 RF hours, most need replacement. But here's what sellers won't tell you: a showerhead that's been sitting in a decommissioned tool with residual WF6 in the lines continues to degrade. Time in storage isn't idle time — it's corrosion time.

Demand a showerhead inspection. Look at the gas distribution holes under magnification. Any visible asymmetry or pitting means replacement. Don't accept "it looked fine when we shut it down." That was months or years ago.

Chamber Liner: Cheap to Replace, Expensive to Ignore

The chamber liner catches most of the tungsten deposition byproducts. Replacement liners cost $8K-$14K — relatively cheap in the context of a $700K tool. But a contaminated liner is the number one source of particle defects on used Altus systems.

Replace the liner on any used Altus purchase. Don't even inspect it — just budget $8K-$14K and move on. The cost of qualifying a used liner versus just replacing it makes the economics obvious.

Gas Line Inspection for WF6 Corrosion Is Non-Negotiable

WF6 corrodes stainless steel gas lines over time, particularly at fittings, valves, and regulators. I've seen gas lines that passed a helium leak test but had internal corrosion severe enough to generate metal particles in the gas stream.

Have a qualified technician inspect every gas line from the gas panel to the chamber. Check valve seats, VCR fittings, and the mass flow controllers. MFC replacement for WF6 lines runs $3K-$6K each, and most Altus configurations have 4-6 MFCs on the tungsten process lines.

If the tool has been sitting for more than 12 months with WF6 residue in the lines, budget $15K-$25K for gas line refurbishment. That's not a worst case — it's typical.

WF6 Handling Certification Adds Time and Money

Your facility needs proper WF6 infrastructure: toxic gas monitoring, scrubbed exhaust, double-contained gas lines, and emergency shutoff systems. If you're installing your first tungsten CVD tool, add $50K-$150K for gas cabinet and abatement, plus 8-12 weeks of permitting and installation.

Even if you already run WF6, verify that your existing infrastructure can handle the additional flow rates. Altus MAX tools running PNL processes have different WF6 consumption profiles than older platforms.

Chamber Conditioning Takes Weeks, Not Days

After installation, a used Altus needs extensive chamber conditioning before it'll run production-quality wafers. Expect 500-1,000 conditioning wafers over 2-3 weeks. At $30-$50 per bare monitor wafer, that's $15K-$50K in wafers alone before you see your first production lot.

Factor this into your timeline and budget. I've had buyers assume they'd be running production one week after installation. The fastest I've ever seen a used Altus qualified was 18 days. The slowest was 9 weeks because of a contaminated gas line nobody caught during inspection.

Service Reality Check

Lam offers service contracts on used Altus tools, but they'll want to inspect the tool first and may require you to bring it up to their baseline spec before they'll cover it. Budget $200K-$280K annually for a full-service agreement.

Third-party service for Lam tungsten CVD is better than most platforms — there are several competent groups, particularly in the US and Asia. Parts availability is good for M and MAX, tighter for XP.

What to Do Right Now

Get the showerhead RF hour count and last replacement date. Request gas line leak test results and internal inspection photos. Ask for the tool's last particle qualification data. Budget $40K-$70K on top of purchase price for showerhead, liner, and gas line refurbishment. If the all-in number still works, you've probably found a good deal.

FAQ

How much does a used Lam Altus MAX cost? $650K to $900K in 2026, depending on configuration and condition. Add $40K-$70K for typical refurbishment of showerhead, liner, and gas lines.

What's the biggest risk buying a used tungsten CVD tool? WF6 corrosion damage that isn't visible during a standard inspection. Gas lines and showerheads degrade even when the tool is sitting idle.

How long does it take to qualify a used Altus after installation? 3-9 weeks depending on tool condition. Budget 500-1,000 conditioning wafers at $30-$50 each.

Can I run a Lam Altus without a Lam service contract? Yes, but you need experienced CVD engineers and a reliable parts source. Third-party service groups exist and are generally competent on the Altus platform.

What's the difference between Altus M and Altus MAX? The MAX adds pulsed nucleation layer capability for better step coverage at advanced nodes. If your processes are 90nm and above, the M is sufficient and costs $200K-$300K less.