| Brand Name: | DLX |
| Model Number: | Inconel 718 Spring Wire |
| MOQ: | 10kg |
| Payment Terms: | L/C,D/A,D/P,T/T,Western Union |
| Supply Ability: | 800 tons per month |
ISO9001 & SGS Certified | Est. 2002 | 12,000 m² Factory | Precision ±0.01mm | 3–7 Day Dispatch
Inconel 718 spring wire from Changzhou DLX Alloy Co., Ltd. is a precipitation-hardenable nickel-chromium-iron alloy wire engineered for springs, fasteners, and high-strength components operating from cryogenic temperatures up to 700°C. Manufactured through multi-pass precision cold drawing with controlled-atmosphere heat treatment, our Inconel 718 wire delivers the fatigue resistance, relaxation resistance, and dimensional consistency required in aerospace, oil & gas, and power generation applications — all with full EN 10204 3.1 MTC traceability on every spool.
| Property | Value | Benefit for Spring Applications |
|---|---|---|
| Heat Treatment | Precipitation-hardenable (age hardenable) | Deliver wire in soft solution-annealed condition for easy coiling, then age harden to full strength — simplifies your manufacturing process |
| Service Temperature | Cryogenic to 700°C | Maintains spring force across extreme temperature swings where stainless steels lose temper and relaxation resistance |
| Fatigue Resistance | Excellent, especially in age-hardened condition | Critical for cyclic-loading springs in valves, actuators, and aerospace control systems |
| Relaxation Resistance | Superior at elevated temperatures | Maintains preload in bolted joints and spring assemblies operating above 500°C where conventional alloys lose clamping force |
| Corrosion Resistance | Good in oxidizing and reducing environments; resists chloride SCC | Suitable for offshore, chemical, and sour service environments without protective coatings |
| Industry | Application | Why Inconel 718 |
|---|---|---|
| Aerospace | Engine valve springs, actuator springs, turbine seal rings, high-strength fasteners & bolts | AMS 5832 qualified; retains strength and fatigue life at engine operating temperatures |
| Oil & Gas | Downhole tool springs, subsea valve springs, wellhead fasteners, sour service bolts | Resists H₂S stress cracking and chloride pitting in deep well and subsea environments |
| Power Generation | Gas turbine springs, steam valve springs, nuclear reactor fasteners | Maintains relaxation resistance through continuous high-temperature operation |
| Automotive & Motorsport | Exhaust valve springs, turbocharger actuator springs, high-performance fasteners | Withstands sustained exhaust gas temperatures without loss of spring rate |
| General Engineering | Cryogenic valve springs, chemical process fasteners, high-temp bolting | Single alloy solution from -196°C to 700°C — no need for multiple material specs |
Not sure about your heat treatment state? Tell us your coiling process and final service temperature — we recommend solution-annealed or age-hardened delivery condition within 24 hours.
Changzhou DLX Alloy Co., Ltd. was founded in 2002 with a single focus: nickel-based specialty alloys. We are not a general wire mill — every drawing die, annealing parameter, and quality checkpoint is designed around nickel alloy wire manufacturing.
Source: DLX Alloy product catalog. EN 10204 3.1 MTC with full composition included on every shipment.
| Element | Ni | Cr | Fe | Nb+Ta | Mo | Ti | Al |
|---|---|---|---|---|---|---|---|
| Specification | 50.0–55.0 | 17.0–21.0 | Bal. | 4.75–5.50 | 2.80–3.30 | 0.65–1.15 | 0.20–0.80 |
| Element | C | Mn | Si | Cu | Co | P | S | B |
|---|---|---|---|---|---|---|---|---|
| Specification | ≤0.08 | ≤0.35 | ≤0.35 | ≤0.30 | ≤1.00 | ≤0.015 | ≤0.015 | ≤0.006 |
| Condition | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HRC) |
|---|---|---|---|---|
| Solution Annealed | ≥827 | ≥414 | ≥30 | ≤25 |
| Age Hardened | ≥1275 | ≥1034 | ≥12 | ≥36 |
Solution-annealed wire is optimized for coiling and forming operations. Age hardening can be performed by DLX before delivery or by the customer after forming — we recommend your heat treatment protocol based on your manufacturing process and final spring specification.
| Wire Diameter | 0.5–7.5 mm (per DLX Inconel catalog Wire range) |
| Delivery Condition | Solution annealed (soft, ready for coiling) or age hardened (finished spring temper) |
| Surface Finish | Bright, oxide, coated (per customer requirement) |
| Tolerance | ±0.01 mm standard; tighter tolerances available on request |
| Packaging | Spooled on plastic or wooden reels; vacuum-sealed with desiccant |
| Applicable Standards | AMS 5832, ASTM B637, AMS 5589 |
| Testing | OES chemical analysis, tensile, hardness, grain size, surface inspection, eddy current |
| Stage | Test / Inspection | Standard |
|---|---|---|
| Ingot / billet | PMI verification, OES chemical analysis | ASTM B637 |
| Hot rolling / rod | Surface inspection, diameter check, grain size evaluation | In-house process spec |
| Cold drawing | In-line diameter monitoring, surface quality inspection at each pass | ±0.01 mm tolerance |
| Post heat treatment | Tensile test, hardness test, grain size analysis, microstructure verification | ASTM E112 |
| Final spool | Eddy current, visual inspection, dimensional audit, spool tension check | Per AMS 5832 |
| Documentation | EN 10204 3.1 MTC, test reports, certificate of conformance | ISO9001 |
Third-party inspection by SGS, BV, or TÜV available upon request. All shipments fully documented and traceable to heat number.
| Spool Types | Plastic reels (D100–D400) or wooden reels per customer specification |
| Packaging | Vacuum-sealed with desiccant, individually boxed; bulk orders on wooden pallets |
| Spool Label | Grade, heat number, diameter, tolerance, net weight, DLX traceability code |
| MOQ | 30 kg per diameter; trial quantities supported for first-time buyers |
| Lead Time | 3–7 days for stock items; 15–25 days for custom production orders |
| Shipping | Air freight (DHL, FedEx), sea freight (FCL/LCL), or customer-designated forwarder |
| Payment | T/T, L/C at sight |
If you coil or form the wire in-house, order solution-annealed for maximum formability — then age harden after forming. If you need wire ready for finish grinding or minor forming only, order age-hardened. Our technical team can review your manufacturing process and recommend the optimal condition.
Yes. We support trial quantities for first-time buyers to validate wire feed, coiling performance, and post-forming heat treatment response before committing to production volumes.
Yes. Wire can be supplied with full AMS 5832 compliance documentation. EN 10204 3.1 MTC with chemical composition, mechanical properties, and grain size is included as standard.
Our standard bright finish from controlled-atmosphere annealing is ideal for most coiling operations — clean surface, no oxide scale, and no decarburization layer. For specific lubrication requirements, coated finishes are available on request.
Every spool is tested and documented before shipment. In the rare event of non-conformance, we review your spring test data against our MTC and resolve through process adjustment or replacement. Our ISO9001 system requires root cause analysis and corrective action on every claim.