Die Cast Tooling Is Our ONLY Business.
Extend the life of your die cast tooling by up to 10x. Solvenite and MaxxShot treatments target heat checking, soldering, and washout. Proven across 100+ repeat customers.
75+
Years combined experience
PROLONG engineering staff
100+
Repeat customers
Die casters, North America
75%
Downtime reduction
4-die OEM controlled test, A380
10×
Gate insert life
MaxxShot vs untreated, documented
Our Treatments
Two Approaches to Extending Tool Life
Core Treatment
Solvenite
Thermal diffusion process performed under 1000°F for a minimum of four hours. The liquid bath reaches every surface, internal water lines included. Welds like normal steel afterward, with no white layer to chip or flake.
.015–.020″ case depth · under 1000°F · 4+ hours · zero size change
Learn About SolvenitePremium Duplex
MaxxShot
Solvenite deep diffusion base plus a hard multilayer PVD vacuum coating of tungsten, chromium, and titanium. The dual-layer approach armors gate areas, washout zones, and critical inserts where surface-only coatings fail.
3,500mv hardness · 5–8 microns per side · 10× gate insert life
Learn About MaxxShot
The Prolong Difference
Why Die Casters Choose Us Over Nitriding and PVD
No Brittle White Layer
Solvenite creates homogeneous diffusion without the compound zone that nitriding produces. The diffused layer holds up under die casting thermal cycles without the chipping or flaking that nitrided tools eventually develop.
Reaches Every Surface
Our liquid thermal bath diffuses into every surface, including internal water lines and blind holes that line-of-sight PVD coatings cannot reach.
Welds Like Normal Steel
Treated tooling can be welded, repaired, and reworked in your tool room without special procedures. Nitrided tools cannot be welded.
Restores Mid-Life Tooling
Solvenite is not only for new tools. The process removes existing solder, clears calcium-clogged waterlines, and strengthens previous welds.
Customer Feedback
What Die Casters Say About Our Treatments
Lee Kittle · Muskegon Die Casting
“Heat check historically filed at 62mm bore is now non-existent at 70K shots. Previously required filing between 2,500–5,000 shots. Huge cost savings in rework, repairs, and uptime.”
Reported Outcomes
70K
Shots before any filing
0
Heat check at 62 mm bore
2.5K–5K
Previous filing interval
Matt Brown · The Port City Group
“Whatever improvements you make to die life, treat your inserts with Solvenite. The results will amaze you.”
Dan Norton · Anderton Casting
“Using Solvenite on VascoMax 300 Steel with Silafont 36. Untreated dies lasted 15K shots; now achieving 80K–100K shots. Ordered 7 dies with 3 more planned, all with Solvenite.”
15K → 80K–100K shots
Vern Moss · Minnesota Die Caster
“MaXXshot core reached 32,350 shots with minimal solder buildup. Light polish performed for first time. Performs much better than other tested coatings.”
32,350 shots · light polish first time
Our Work
Treated Tooling
Multi-Cavity Die Housing
Solvenite Thermal Diffusion
Cylindrical Die Insert
Solvenite Thermal Diffusion
Multi-Cavity Die Plate
MaxxShot Duplex PVD
Next Step
Send us your tooling specs.
A PROLONG die cast engineer will recommend the right treatment for your steel, alloy, and shot volume. Most tooling ships within 5–7 business days.