Vasundhara Specialities — Authorised Castrol Industrial Partner — supplies the complete Castrol Iloquench heat-treatment quenching oil range across South India. Iloquench 1 (fast-quench for tough steels), Iloquench 21 (delayed-quench for distortion-sensitive parts), Iloquench 25 (vacuum-furnace clean grade), Iloquench M (martempering at 150-200°C bath temperature). For automotive forging, tool steel heat treatment, bearing manufacture and aerospace component hardening. Pan-South-India dispatch from Hyderabad warehouse.
Castrol Iloquench heat-treatment quenching oils — Iloquench 1 (fast-quench for tough alloy steels), Iloquench 21 (delayed-quench for distortion-sensitive parts), Iloquench 25 (vacuum-furnace clean grade), Iloquench M (martempering for hot-quench at 150-200°C). Cooling-curve characterised, oxidation-life monitored. Vasundhara Specialities supplies the full Iloquench range across AP and Telangana with technical support for cooling-curve selection by alloy + part geometry + distortion target.
Castrol Iloquench is the heat-treatment quenching-oil range that defines hardening operations across the Indian automotive-forging supplier base. Iloquench 1 (fast-quench, cooling-curve characterised against the Wolfson benchmark) covers crankshaft forging, axle-shaft hardening, and gear-blank case-hardening operations for the automotive supplier chain across the Hyderabad, Hosur and Pune forging clusters. Iloquench 21 (delayed-quench) reduces the cooling rate to limit thermal distortion in distortion-sensitive parts — used for ball-bearing inner-ring and outer-ring hardening across the Indian bearing-manufacturing base. Iloquench 25 (vacuum-furnace clean grade) supports aerospace-component hardening in the Hyderabad aerospace and defence cluster, where vacuum-pump loading and clean-furnace surface integrity matter. Iloquench M is the martempering grade for hot-quench operations at 150-200°C bath temperature, used for complex-geometry tooling and aerospace forging components where post-quench distortion is a major scrap driver. Selection between these isn't catalogue-default — it's a metallurgy + part-geometry + distortion-budget question with measurable economic impact on scrap rate. A wrong-grade quench-oil selection shows up as scrap rather than as wear, which is what makes it worth settling with a cooling curve and a trial load. Vasundhara Specialities supports quench-oil sample analysis (TAN, viscosity, water content, cooling-curve drift) to extend bath life and set drain timing from trend data rather than from a fixed period. Castrol India's Iloquench heat-treatment line covers the full cooling-curve specification range.
Complete Castrol coverage across the castrol iloquench quenching oils family.
Fast-quench heat-treatment oil for tough alloy steels and case-hardening service requiring maximum cooling rate. Standard cooling-curve characterised per Wolfson / IFHTSE benchmark. For alloy-steel hardening, gear-blank case-hardening + tough-steel through-hardening service.
Delayed-quench heat-treatment oil for distortion-sensitive parts. Slower cooling rate vs Iloquench 1 — reduces thermal gradient and resulting distortion. For thin-section parts, complex geometries + low-distortion-budget heat-treatment programmes.
Vacuum-furnace heat-treatment oil. Low vapour pressure (minimises vacuum-pump loading), low oxidation product formation. For clean-furnace operations + aerospace / medical-grade components requiring minimal surface contamination.
Martempering quench oil for hot-quench operations at 150-200°C bath temperature. Reduces distortion via interrupted-cooling between austenitising and tempering. For complex-geometry tooling + aerospace components.
Castrol's specialty grades for specific application-OEM heat-treatment programmes — austempering oils, isothermal-quench oils, water-emulsion quenchants where specified. Cross-reference your specific OEM heat-treatment specification with us.
Standard property values across the range. TDS / MSDS / per-batch COA available on enquiry.
| Property | Test Method | Iloquench 1 | Iloquench 21 | Iloquench 25 | Iloquench M |
|---|---|---|---|---|---|
| Quench Type | — | Fast | Delayed | Vacuum | Martempering |
| Bath Temperature (°C) | — | 20-80 | 20-80 | 20-100 | 150-200 |
| Cooling Time A→Ms (s, 800-300°C) | Wolfson | 10-15 | 20-30 | 12-18 | — |
| Kinematic Viscosity at 40°C (cSt) | ASTM D445 | 20-25 | 25-32 | 20-25 | 20-30 |
| Flash Point (°C) | ASTM D92 | ≥175 | ≥175 | ≥190 | ≥230 |
| Vapour Pressure (mbar at 50°C) | ASTM D2879 | 0.5-1.0 | 0.5-1.0 | ≤0.1 | 0.2-0.5 |
| Drainage from Part | Visual | Excellent | Good | Excellent | Good |
| Density at 15°C (g/cm³) | ASTM D1298 | 0.870 | 0.875 | 0.870 | 0.880 |
Standards: Wolfson cooling-curve characterisation · IFHTSE quench-oil benchmark · ASTM D6200 quench-oil test · OEM-specific heat-treatment specifications. Per-batch cooling-curve data provided.
Where Castrol Iloquench Quenching Oils ship from our Hyderabad warehouse — by industry segment + application profile.
Iloquench 1 for crankshaft forging post-forge quench + axle-shaft hardening. Hyderabad / Hosur / Pune automotive-forging supplier-base. Automotive component-supply chain.
Iloquench 21 for ball-bearing inner-ring + outer-ring hardening. Distortion-control critical for bearing tolerance class. The Indian bearing-manufacturing base.
Iloquench M martempering for high-alloy tool steels + die-block hardening. Reduces distortion in complex-geometry tooling — die blocks, mould cavities, aerospace tool fixtures.
Iloquench 25 vacuum-furnace grade for aerospace-component hardening — landing-gear forgings, engine-component hardening, gear-blank hardening. Hyderabad aerospace and defence cluster.
Iloquench 1 for wind-turbine main-shaft hardening + heavy-machinery gear-blank hardening. Wind-turbine and heavy-machinery OEM forging base.
Iloquench 1 / 21 across the heat-treatment service-centre network — captive HT shops + commercial HT job-shops serving multiple end-customer OEMs. Selection by part metallurgy + distortion target per job.
Visit Us: Bhimavaram, Andhra Pradesh | Authorised Castrol Industrial Partner supplying Hyderabad and South India | Pan-India dispatch via authorised distribution network.
Common questions from maintenance + procurement buyers sourcing Castrol Iloquench Quenching Oils through Vasundhara Specialities.
Select Iloquench 1 fast-quench when: (1) tough-alloy steels require maximum hardness via fast cooling, (2) part geometry is simple/uniform with low distortion sensitivity, (3) through-hardening or case-hardening with target hardness driving the choice. Select Iloquench 21 delayed-quench when: (1) thin-section or complex-geometry parts where fast cooling causes excessive distortion, (2) lower-alloy steels where slower cooling still achieves target hardness, (3) distortion-budget is the primary constraint. For uncertain cases, we will analyse your specific alloy + part geometry.
Iloquench M martempering bath temperature: 150-200°C, depending on alloy steel Ms (martensite-start) temperature. The bath is held just above Ms to allow the part to equalise temperature before further cooling, dramatically reducing distortion vs conventional through-quench. Higher-Ms steels (lower-alloy) use lower bath temperature (150-160°C); higher-alloy steels with lower Ms use higher bath temperature (180-200°C). Cross-reference the specific alloy CCT diagram.
Quench-oil oxidation life is tracked via TAN (Total Acid Number — rising trend signals oxidation), viscosity drift (rising = oxidation, falling = thermal cracking), water content (>0.05% degrades performance), and cooling-curve drift (Wolfson re-test every 12-18 months). Vasundhara Specialities provides quench-oil sample analysis as part of the supply relationship — typical analysis interval 6 months for production-volume HT shops, 12 months for low-volume shops. Drain decision is condition-based, not calendar-based.
Vacuum-furnace heat-treatment requires very low oil vapour pressure to minimise vacuum-pump loading and avoid contaminating the vacuum chamber. Iloquench 25's vapour pressure (≤0.1 mbar at 50°C) is approximately 5-10× lower than Iloquench 1, dramatically reducing vacuum-pump duty. Additionally, Iloquench 25 produces lower oxidation products during the quench cycle, leaving cleaner part surfaces — critical for aerospace + medical-grade components.
Production heat-treatment service with proper filtration (continuous 25-micron filtration), water-removal (centrifuge or coalescer), and stable bath-temperature management: Iloquench 1 service life varies widely between shops, mostly with drag-out rate and water ingress. Sample analysis (TAN trend, viscosity, cooling-curve drift) drives drain timing — top-up only when properties drift outside specification. Calendar-based replacement is rarely necessary.
Iloquench 25 vacuum-furnace grade meets aerospace AMS 3025 specification for vacuum-furnace quench-oil service. Iloquench 1 + Iloquench 21 meet typical commercial heat-treatment specifications (Wolfson cooling-curve benchmark, IFHTSE category). For specific AMS / aerospace specification compliance, per-batch certification provided on enquiry. We supply the Hyderabad aerospace and defence cluster for AMS-grade quench service.
Production heat-treatment shops typically maintain 1-2 drums Iloquench in immediate stock + 4-6 drums in reserve for the quench-bath top-up cycle. Vasundhara Specialities provides priority replenishment dispatch from our AP stock point to South-Indian HT shops, with emergency-response handling for unscheduled quench-bath replacement events. Direct WhatsApp business-line for HT-shop dispatch coordination.
Yes. Vasundhara Specialities Pvt Ltd is an authorised Castrol Industrial distributor (Andhra Pradesh), supplying Hyderabad, Telangana, Karnataka, Tamil Nadu and all of South India from our Bhimavaram stock point. Genuine Castrol Iloquench heat-treatment quenching oils with full manufacturer authorisation documentation provided on enquiry. For complete Castrol industrial portfolio see our Castrol catalogue.
After the Quaker and Houghton merger, legacy Houghton names were rebranded: Houghto-Quench oils are now sold as QH Houghtoquench, Mar-Temp martempering oils as QH Martemp, and Aqua-Quench polymer quenchants as QH Aquaquench. Castrol Iloquench covers the same duty classes - fast cold quenching, delayed quenching, martempering and water-based polymer quenching. Because quench performance is defined by cooling-curve behaviour rather than brand name, changeovers are practical: we support them with cooling-curve datasheet comparison, drain-and-flush guidance and first-fill oil monitoring as part of our cross-reference support.
Fuchs has been rebranding its quenching range from Thermisol to Renoquench in several markets, so the same fluid may appear under either name depending on the datasheet's age - Fuchs India literature has continued to use Thermisol. The duty classes are unchanged: bright and high-performance quench oils, martempering oils and water-based polymer quenchants. Castrol Iloquench covers the same classes, and because quench behaviour is defined by the cooling curve rather than the brand, we support any changeover with cooling-curve datasheet comparison and first-fill monitoring through our cross-reference support.
Complete Castrol Industrial portfolio supplied by Vasundhara Specialities.
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Request Quote WhatsApp UsWe supply Telangana customers directly from our IDA Mallapur warehouse in Hyderabad — genuine Castrol packs with batch COA, TDS and MSDS documentation. For Hyderabad-local service and multi-brand industrial supply, our Vasundhara Group company Vasundhara Performance Solutions is based in Hyderabad.