Changzhou DLX Alloy Co., Ltd.
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Product Specification
| High Light | 1200°C High-Temperature Performance Nichrome Strip ，High Electrical Resistance Cr10Ni90 Strip ，Excellent Surface Load Capacity NiCr Strip | ||
Cr10Ni90 nichrome strip from Changzhou DLX Alloy Co., Ltd. sits at the top of the nickel-chromium heating alloy family — 90% nickel, 10% chromium, and a maximum operating temperature of 1300°C that no other standard NiCr grade can match. At DLX, our Cr10Ni90 strip is precision cold rolled from hot-rolled coil, solution annealed in controlled atmosphere, and slit to your exact width — delivering the consistent resistivity, uniform thickness, and clean edge quality that industrial furnace builders and heating element manufacturers require. Full EN 10204 3.1 MTC with resistivity measurement on every shipment.
| Property | Cr10Ni90 | Cr20Ni80 | Cr15Ni60 | What the Difference Means |
|---|---|---|---|---|
| Nickel Content | 90% | ~80% | ~60% | Every 10% of nickel buys roughly +80–100°C in maximum operating temperature |
| Max Operating Temp | 1300°C | 1200°C | 1150°C | Those 100°C between Cr10Ni90 and Cr20Ni80 are the difference between a furnace that reaches 1250°C and one that burns out its elements mid-cycle |
| Melting Point | 1400°C | 1400°C | 1390°C | All NiCr grades melt near 1400°C — but Cr10Ni90's higher Ni gives it the longest oxidation life at any given temperature below melt |
| Density | 8.7 g/cm³ | 8.4 g/cm³ | 8.2 g/cm³ | Cr10Ni90's higher density means more mass per unit volume — translates to longer element life at temperature |
| Oxidation Life | Best in class | Very good | Good | At 1200°C, Cr10Ni90 lasts approximately 30–50% longer than Cr20Ni80 under the same conditions. The 90% Ni forms a more adherent, slower-growing Cr₂O₃ scale. |
| Application | Operating Condition | Why Cr10Ni90 Strip |
|---|---|---|
| High-temperature laboratory furnaces | Continuous 1200–1280°C, air atmosphere, years of cycling | Cr20Ni80 would fail within months at these temperatures. Cr10Ni90 is often the only NiCr grade rated for continuous service above 1250°C. |
| Sintering furnace elements | 1100–1300°C, reducing or neutral atmosphere | Strip form provides higher surface area per unit mass than wire — more radiant heat output per element at the same temperature. |
| Industrial ribbon heaters | 800–1100°C, air, frequent thermal cycling | Strip geometry resists sagging and distortion better than wire at high temperature — maintains consistent spacing between adjacent element loops over the element's life. |
| Glass tempering furnace heaters | 700–900°C, radiant heating, uniform temperature requirement | Flat strip provides even radiant heat distribution across the glass surface — no hot spots from wire geometry that cause uneven tempering. |
| Ceramic kiln elements | 1200–1280°C, oxidizing, embedded in ceramic fiber or brick | Embedded application amplifies element temperature above the chamber temperature. Cr10Ni90's 1300°C rating provides the necessary safety margin. |
When a nichrome element fails at 1280°C, the post-mortem often reveals the root cause is not the alloy composition — it is a processing step done wrong months earlier. A pass of cold rolling that was reduced too aggressively, leaving residual stress that relaxed unevenly during the first firing. A slitting burr that created a microscopic hot spot. An annealing cycle that was 20°C too low, leaving incomplete recrystallization.
At DLX, we have been manufacturing NiCr alloys since 2002. The Cr10Ni90 strip that ships to furnace builders in Germany, kiln manufacturers in Japan, and laboratory equipment makers worldwide reflects twenty years of accumulated process control — the kind of incremental knowledge that separates a strip that reaches 1300°C without failure from one that doesn't. Our operators know that for 90%Ni alloy, the recrystallization finish temperature is higher than for 80%Ni alloy, and the annealing soak time must be adjusted accordingly. This is not in a textbook — it is learned through making thousands of tons of nichrome strip and seeing what works.
Source: DLX Alloy product catalog. Full composition included on every shipment.
| Element | Ni | Cr | Fe |
|---|---|---|---|
| % | 90.0 | 10.0 | ≤1.0 |
| Property | Cr10Ni90 |
|---|---|
| Maximum Operating Temperature | 1300°C |
| Melting Point | 1400°C |
| Density | 8.7 g/cm³ |
| Elongation at Rupture | ≥20% |
| Microstructure | Austenite |
| Magnetic Properties | Nonmagnetic |
| Product Form | Cold rolled strip, slit to width |
| Thickness Range | 0.5–2.5 mm |
| Width Range | 5–40 mm standard; custom widths on request |
| Delivery Condition | Solution annealed (standard); pre-oxidized on request |
| Surface Finish | Bright annealed, oxide, or pre-oxidized green Cr₂O₃ scale |
| Edge Condition | Slit — clean, burr-free |
| Packaging | Coil wound on spool or eye-to-sky; interleaved with pH-neutral protective paper; vacuum sealed with desiccant |
| Testing | Resistivity measurement per coil, dimensional inspection, tensile, surface quality |
| Stage | What We Check | Why for Cr10Ni90 Specifically |
|---|---|---|
| Melting | OES — Ni 90% ± tight internal band, Cr 10%, Fe ≤1.0% | Nickel at 90% is what buys 1300°C. If it drifts to 89%, the max temp drops by ~10°C. We hold a tighter internal specification than the grade range. |
| Hot rolling | Surface inspection, thickness profile, edge quality | Hot-rolled surface defects propagate through cold rolling. Caught here, scrapped here — before adding cold-roll cost. |
| Cold rolling | Thickness across width (crown), reduction per pass, surface roughness | Uneven crown creates thickness variation that becomes resistivity variation and hot spots in the finished element. |
| Annealing | Furnace temperature profile, soak time, cooling rate; grain structure verification | Cr10Ni90 requires a higher recrystallization finish temperature than lower-nickel NiCr grades. Our cycles are calibrated for 90%Ni — not a generic NiCr setting. |
| Slitting | Width tolerance, edge condition under 10* magnification, burr check | Edge burrs on Cr10Ni90 strip become failure initiation points at 1200°C+ service. Every slit coil inspected before packing. |
| Documentation | EN 10204 3.1 MTC + resistivity report + dimensional certificate | Full traceability from melt through finished coil. |
Third-party inspection by SGS, BV, or TÜV available. Free sample available for new customer evaluation.
| Coil winding | Strip wound on plastic or steel spool (eye-to-sky or eye-to-wall per your requirement). Interleaved with pH-neutral protective paper between layers to prevent surface marring. |
| Sealing | Vacuum sealed with desiccant in heavy-gauge polyethylene. For ocean freight: additional aluminum barrier foil layer to block humidity ingress during transit. |
| Identification | Grade Cr10Ni90, heat number, thickness * width, coil weight, resistivity value, DLX traceability code on every coil tag and packing list. |
| MOQ | 10 kg per size. Free sample available for new customers — test our strip in your elements before committing to production volumes. |
| Lead Time | 3–7 days for stock sizes; 15–25 days for custom production. |
| Shipping | Air (DHL, FedEx), sea (FCL/LCL), or your forwarder. |
| Payment | T/T, L/C at sight |
Based on accelerated oxidation testing, Cr10Ni90 delivers approximately 30–50% longer life than Cr20Ni80 at 1200°C under identical conditions. The difference comes from the higher nickel content forming a slower-growing, more adherent chromium oxide scale. However, actual element life depends on many factors — atmosphere, cycling frequency, watt density, and element geometry all play a role. We can supply both grades for comparative testing in your specific application.
Yes. For applications above 1200°C, we offer a controlled pre-oxidation treatment that forms a uniform green Cr₂O₃ protective layer before shipment. This eliminates the need for a break-in firing cycle on your end and maximizes protective scale thickness from the first operating hour. Specify "pre-oxidized" when ordering.
0.5 mm minimum thickness by cold rolling. For thicknesses below 0.5 mm, the alloy's work hardening rate at 90%Ni makes further cold reduction without edge cracking challenging. For sub-0.5mm requirements, consider wire form or contact our technical team to discuss feasibility.
Yes. The austenitic structure of Cr10Ni90 is readily weldable using TIG or resistance welding. Use matching Cr10Ni90 filler or pure nickel filler for element-to-lead connections. Post-weld annealing is not required for the weld zone — but the heat-affected zone adjacent to the weld may have slightly different oxidation behavior at very high temperatures.
Yes. Each coil is individually measured for resistivity and the value is recorded on the coil tag and the EN 10204 3.1 MTC. If you need coils sorted into narrow resistivity bands for matching element sets, we can do that — specify your acceptable resistivity range when ordering.
Company Details
Business Type:
Manufacturer,Seller
Year Established:
2002
Total Annual:
1000000-120000000+
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Changzhou DLX Alloy Co., Ltd. was established in 2002 and has passed ISO9001 international quality management system certification and SGS certification.We initially focused on the production of resistance alloys. Over the past 20 years, we have continued to conduct research and development and now ... Changzhou DLX Alloy Co., Ltd. was established in 2002 and has passed ISO9001 international quality management system certification and SGS certification.We initially focused on the production of resistance alloys. Over the past 20 years, we have continued to conduct research and development and now ...
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