Water Diluted Machining Coolants
Compare QA Synthetic 3600, the QA OR Syn range and QualiChem Xtreme Cool C formulations for machining and grinding.
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Choose around the operation
QA Synthetic 3600 is an economical oil-accepting option for light to medium-duty machining. The OR Syn and Xtreme Cool ranges offer oil-rejecting options with different lubricity levels, material suitability and working concentrations. Match the fluid to the alloy, water conditions and cutting severity.
8 product profiles
Economical traditional synthetic · Oil accepting
An economical traditional oil-accepting synthetic designed for light to medium-duty machining.
Application concentration
Ask QA for the recommended working concentration for your material and operation.
Oil-accepting formulation, as specified by QA. Review sump condition, contamination control and product-specific concentration guidance with your technical professional.
Oil rejecting · Light to medium duty
Synthetic for light to medium-duty machining and grinding. Offers corrosion protection on aluminum and steel, low foam, clean operation and low drag-out. Suitable for some stainless alloys and titanium at the proper concentrations.
Application concentration
Ask QA for the concentration required by the alloy and operation.
Clear and colorless concentrate and working fluid. Density at 20°C: 1.02 kg/L. No chlorine, sulfur or phenols listed. Designed for microbial control at recommended concentrations.
Intermediate OR Syn performance
The intermediate option between OR Syn 3915 and OR Syn 3935 in the QA synthetic coolant range. Review the material and machining demands with QA to select the appropriate performance level.
Application concentration
Contact QA for product-specific dilution guidance.
Positioned between 3915 and 3935 as specified by QA. No numerical properties or refractometer factor have been interpolated from the adjacent products.
High lubricity · Oil rejecting
Formerly OR Syn 3736. High-lubricity synthetic for aluminum and difficult-to-machine steels. Runs clean, washes off parts easily and minimizes drag-out; provides low foam and corrosion protection for aluminum and steel.
Application concentration
Ask QA for the concentration for your operation; selected stainless alloys and titanium require the proper concentration.
Supplied former-name sheet: clear and colorless fluid; pH at 5% in DI water 8.4; refractometer factor 1.43; density at 20°C 1.065 kg/L. No chlorine, sulfur or phenols listed. Confirm current 3935 product guidance with QA.
General-purpose synthetic · Ferrous alloys
Oil-rejecting solution synthetic for light to moderate-duty cutting and grinding of ferrous alloys. Designed for clean operation, reduced tacky residue, corrosion protection and long sump life.
Application concentration
Machining: 4–12%; grinding: 3–5%.
Formerly Q-Cool 331C. Transparent dilution. Typical pH at 5%: 9.1–9.5. Density 8.7 lb/gal. No chlorine or sulfur listed. Use the supplied product-specific refractometer table.
Moderate duty · Mild pH · No blue dye
Oil-rejecting synthetic for moderate-duty machining of ferrous and non-ferrous metals. Its mild-pH formulation is designed to help prevent staining on sensitive aluminum and aerospace alloys. Same formulation as 335, without the blue dye.
Application concentration
Machining: 5–12%; grinding: 4–6%.
Undyed C version only. Supplied 335 sheet, applicable under QA’s formulation clarification: transparent dilution; pH at 5% 7.6–8.0; density 8.80 lb/gal. No chlorine or sulfur listed. Use the product-specific refractometer table.
Heavy-duty synthetic · Multi-metal
Formerly Q-Cool 353C. The undyed option in the heavy-duty 353 synthetic family for ferrous and non-ferrous metals. The family is designed for demanding operations such as broaching, deep-hole drilling, gear hobbing, gundrilling, honing and threading.
Application concentration
Supplied family guidance: machining 4–12%; grinding 3–6%.
The legacy Q-Cool 353 sheet identifies 353C as the undyed version. Family pH at 5%: 7.6–8.0. Oil rejecting, low foaming and formulated for sensitive aluminum and aerospace alloys. Confirm the current C-version data and concentration table with QA.
Heavy-duty synthetic · Aerospace aluminum
Formerly Q-Cool 355C. The undyed option in the heavy-duty 355 family, designed for aerospace aluminum and other aerospace alloys. Combines oil rejection, corrosion protection and clean operation for severe cutting and grinding processes.
Application concentration
Supplied family guidance: machining 5–12%; grinding 4–6%.
The legacy Q-Cool 355 sheet identifies 355C as the undyed version. Family pH at 5%: 7.4–7.8. Designed for severe operations including broaching, deep-hole drilling, gundrilling, honing and threading. Confirm current C-version data and concentration guidance with QA.
No matching products. Try a different name, application or brand.
QualiChem products on this page are C versions only. The former Q-Cool names are now Xtreme Cool. Xtreme Cool 335C is the 335 formulation without blue dye; the supplied legacy 353 and 355 sheets also identify their C options as undyed.
Concentration control
Use the refractometer’s calibration instructions, then apply the factor or table for the exact coolant. A Brix reading is not necessarily the actual coolant percentage. Do not average the 3915 and 3935 values to set up 3925.
When mixing by hand, add concentrate to water. Confirm the final concentration after thorough mixing. Maintain concentration and remove tramp oil and particulate according to the fluid’s oil-handling characteristics and your application.
The 331C and 335 sheets give the same conversion table. The historical 353 and 355 family tables differ. Confirm the current C-version instructions for your supplied coolant.
| Actual concentration, % | 3 | 4 | 5 | 6 | 7 | 8 | 10 | 12 |
|---|---|---|---|---|---|---|---|---|
| 331C / 335C reading | 1.2 | 1.6 | 2.0 | 2.4 | 2.8 | 3.2 | 4.0 | 4.8 |
Atago Master M with distilled-water dilutions. Water and instrument choice can affect readings.
Profiles use the supplied data sheets and QA’s naming and formulation clarifications. The former OR Syn 3736 sheet supports the 3935 profile. Values are typical, not specification limits; request current product guidance for your application.
Application support
Tell us your material, operation, water quality, current fluid and performance goals. Call 1.877.877.6221 or email info@qalube.com.