Dual-horizontal-axis cooling chart
The vertical axis is workpiece temperature. Read cooling time from the bottom axis and instantaneous cooling rate from the top axis.
Solid · temperature-timeDashed · rate-temperature
General-purpose quenchant
AR-GP General-Purpose Water-Based Quenchant
Built for the largest-volume everyday heat-treatment work: concentration-adjustable cooling without the open-flame risk of quenching oil, with clean workpieces, low viscosity and practical batch operation.
Cooling performance
Select water or any of five AR-GP concentrations
Select one to six series. Each option controls both its solid temperature-time path and dashed instantaneous-cooling-rate-temperature path. All six are shown by default.
6
Six numbered curves, six stated concentrations
① water; ② 5%; ③ 10%; ④ 15%; ⑤ 20%; ⑥ 25%. All six series share one dual-horizontal-axis chart and can be selected individually or together.
| Concentrate appearance | Light-yellow liquid |
|---|---|
| Specific gravity at 25°C | 1.09 |
| Appearance of 5% aqueous solution | Colourless transparent liquid |
| pH of 5% aqueous solution | 8.2 |
| Steel corrosion, 50°C for 3 hours | Pass |
| Copper corrosion, 50°C for 3 hours | Pass |
| Impurities | 0.06% |
Product role
General-purpose volume first, dedicated media for special boundaries
AR-GP does not replace the dedicated range. It completes the portfolio for the broadest, highest-volume everyday water-based quenching work.
Concentration-adjustable cooling
AR-GP forms a stable aqueous solution, allowing the cooling response to move from the water side toward the oil side as concentration changes.
Clean and fire-safe operation
No quenching-oil fire hazard, cleaner workpiece surfaces and low viscosity for practical continuous or batch production.
Complex and large workpieces
Low viscosity supports access into complex geometry. Final concentration still depends on effective section, distortion and cracking risk.
Applications
From induction-hardened parts to large through-quenched workpieces
Induction-hardened parts
Gears, sprockets and other induction-hardened parts requiring controlled cooling and a clean surface.
Everyday through hardening
Standard parts, balls, springs, crankshafts and workpieces across a range of dimensions.
Large workpieces
Large drive wheels and complex components, with concentration set from tank, circulation and loading conditions.
Non-ferrous alloys
Aluminium alloys, copper and related workpieces; confirm material condition, solution temperature and cooling practice for each application.
Process control
Set the target cooling curve, then control concentration by refractometer
Define the workpiece
Provide material, dimensions, weight, target microstructure or hardness and the current quenching problem.
Set the curve window
Use a quenchometer to compare cooling curves and determine the AR-GP concentration range for the workpiece.
Mix under circulation
Add AR-GP concentrate to water at the selected ratio and circulate until the solution is uniform.
Maintain by refractometer
Control concentration by refractometer. The product information specifies solution temperature below 60°C.
Packaging and storage
200 kg drums or 20 kg packs; store in a cool, dry place and protect from rain. Confirm the available package when requesting a quotation.
FAQ
AR-GP general-purpose quenchant questions
Can AR-GP directly replace every quenching oil?
AR-GP can be evaluated as an oil alternative, but it is not a name-for-name substitution. Hardenability, effective section, target microstructure, distortion risk, tank, temperature and relative motion must be considered together.
Does a higher concentration always cool faster?
No. The six curves show that concentration changes both high- and low-temperature cooling paths. Select concentration from the target workpiece curve, not simply from the highest peak cooling rate.
How is production concentration maintained?
First establish the target cooling window with a quenchometer, then monitor concentration by refractometer and record solution temperature, relative motion, loading and make-up additions.
Send the material, dimensions and current medium
Enter an email address and two lines about the workpiece. We will reply with a AR-GP concentration direction based on section, performance target and tank conditions.