ISO9001 & SGS Certified | Since 2002 | 12,000 m² Factory |
Precision-Grade Bars, Custom Sizes | 7-15 Day Delivery
Pure Nickel Bars Engineered for Precision Machining Projects
Machining nickel is a different game from machining steel: the
metal wants to work-harden, chip control matters, and a bar with
loose dimensional consistency turns a finished part into scrap.
Precision machining projects need a material with stable hardness
for predictable cutting, enough elongation to survive drilling and
threading, and tolerances that are locked before production. Pure
nickel bars from DLX are supplied with an annealed baseline of
90-120 HB and ≥35% elongation, custom diameters and lengths made
per drawing, and EN 10204 3.1 MTC on every batch. Four grades — N4,
N6, Ni200, Ni201 — cover the range from vacuum-electronics purity
to industrial corrosion duty. Sizes, tolerances and temper are
confirmed at drawing review, so the bar arrives ready for your
process.
Size & Specification Overview
| Parameter | Availability | Notes |
|---|
| Diameter | Custom, per drawing | Popular diameters in stock |
| Length | Custom, per drawing | No standard catalog range |
| Straightness | Per drawing | Confirmed at drawing review |
| Surface | Per drawing | Drawn, pickled or machined as specified |
| Tolerance | Per drawing | Locked before production |
Key Strengths
- Annealed 90-120 HB hardness for stable, predictable cutting — fewer
surprises at the tool.
- ≥35% elongation resists cracking during turning, drilling and
threading.
- Custom diameters and lengths per drawing, with tolerances locked at
drawing review.
- Four grades on one purchase order — N4/N6/Ni200/Ni201 — match
machinability to cost.
- EN 10204 3.1 MTC with batch traceability on every delivery.
Technical Deep Dive
1. Machinability — Built for the Machine Shop
Work-hardening is the first thing a machinist notices about nickel.
DLX controls it from the temper side: annealed bars hold a stable
90-120 HB range, keeping cutting forces predictable, while ≥35%
elongation reduces the risk of cracking when a tool engages an
edge. The result is a bar that machines consistently from heat to
heat.
| Machining Property (annealed) | Value | Why It Matters |
|---|
| Hardness | 90-120 HB | Stable cutting forces, predictable tool life |
| Elongation | ≥35% | Resists edge cracking in drilling and threading |
| Tensile strength | ≥462 MPa | Part strength after machining |
2. Dimensional Control — Tolerances Locked by Drawing
Precision work starts before the first cut. Diameter, length,
straightness and surface finish are confirmed against your drawing
before production, and the tolerances are locked at that review. No
stock-size guessing, no last-minute compromises.
| Parameter | Value | Tolerance |
|---|
| Diameter | Per drawing | Per drawing |
| Length | Per drawing | Per drawing |
| Straightness | Per drawing | Per drawing |
| Surface finish | Per drawing | Per drawing |
3. Temper Options for Machining
Annealed is the recommended temper for machining and forming;
cold-worked tempers provide higher strength where the finished part
carries load. Specify the target strength or hardness on the
drawing, and the temper is set accordingly.
| Temper | Typical Use | Note |
|---|
| Annealed (standard) | Machining, forming, general service | 90-120 HB, ≥35% elongation |
| Cold-worked | Higher-strength applications | Values per drawing — specify target strength |
4. Precision Applications
Round bars in this range support machined components where
dimensional stability and corrosion resistance both matter: tooling
fixtures, fasteners, machined fittings, and parts for chemical and
instrumentation duty. The grade choice tunes the balance — N6 for
cost-effective industrial parts, Ni201 for higher-temperature
service, N4 for the strictest purity requirements.
Grade & Price Guide
| Grade | Ni Content | Best Application | Reference Price (FOB, USD/kg) |
|---|
| N4 (NP1) | ≥99.9% | Vacuum electronics | 420-480 |
| Ni201 | ≥99.0% | High-temp service | 350-390 |
| Ni200 | ≥99.2% | Battery, chemical | 340-380 |
| N6 (NP2) | ≥99.5% | Industrial corrosion | 300-340 |
Indicative FOB China reference prices for bars; final quotation per
grade, size, quantity and temper.
Chemical Composition
| Element (wt%) | N4 | N6 | Ni201 | Ni200 |
|---|
| Ni+Co | 99.9 | 99.5 | — | — |
| Ni | — | — | ≥99.0 | ≥99.2 |
| C | ≤0.01 | ≤0.10 | ≤0.02 | ≤0.15 |
| Cu | ≤0.015 | ≤0.10 | ≤0.25 | ≤0.25 |
| Si | ≤0.03 | ≤0.10 | ≤0.35 | ≤0.35 |
| Mn | ≤0.002 | ≤0.05 | ≤0.35 | ≤0.35 |
| Fe | ≤0.04 | ≤0.10 | ≤0.40 | ≤0.40 |
| S | ≤0.001 | ≤0.005 | ≤0.01 | ≤0.01 |
| P | ≤0.001 | ≤0.002 | — | — |
| Mg | ≤0.01 | ≤0.10 | — | — |
Source: DLX product catalog. N4/N6 per GB system; Ni200/Ni201 per
ASTM system.
Physical & Mechanical Properties
| Property | Value |
|---|
| Density | 8.908 g/cm³ |
| Melting point | 1435-1446°C |
| Curie temperature | 358°C |
| Shear modulus | ~76 GPa |
| Resistivity (20°C) | 0.096 μΩ·m |
| Thermal conductivity (Ni200) | 70.2 W/m·K |
| Tensile strength (annealed) | ≥462 MPa |
| Elongation (annealed) | ≥35% |
| Hardness (annealed) | 90-120 HB |
Product Specification
| Specification | Detail |
|---|
| Form | Round bar (custom) |
| Grades | N4 (NP1), N6 (NP2), Ni200, Ni201 |
| Diameter | Per drawing; popular diameters in stock |
| Length | Per drawing |
| Surface | Per drawing |
| MOQ | 10 kg |
| Packaging | Bundled straight bars, export wooden cases |
| Certification | EN 10204 3.1 MTC, ISO9001, SGS |
The 10 kg minimum order for bars covers drawing setup and heat
allocation, so tolerances can be locked per drawing; wire and strip
products are available at 5 kg MOQ.
Quality Assurance
Quality control for bars follows the shape, not a generic
checklist:
- Incoming: raw nickel verified per heat before processing.
- In-process: diameter, length and straightness checked with
calibrated instruments; surface inspected along the full length.
- Final: tensile and hardness testing sampled per heat; chemical
composition verified per heat.
- Documentation: EN 10204 3.1 MTC with heat number, test results and
full traceability.
Ni200/Ni201 bars are manufactured and tested to ASTM B160; N4/N6
follow GB/T 4435-2010. Testing methods and acceptance criteria
follow the drawing specification and applicable standards.
Applicable Standards
| Grade | Standard |
|---|
| Ni200 / Ni201 | ASTM B160 (Nickel Rod and Bar) |
| N4 (NP1) / N6 (NP2) | GB/T 4435-2010 (Nickel and Nickel Alloy Bars) |
Packaging & Delivery
Straight bars are bundled and protected against transit damage;
longer lengths travel in export wooden cases, seaworthy-packed for
container shipment. In-stock diameters can be dispatched promptly,
and production lead time is 7-15 days after drawing and grade
confirmation. Every order ships with the complete export
documentation set: packing list, commercial invoice and mill test
certificate.
About Changzhou DLX Alloy Co., Ltd.
Changzhou DLX Alloy Co., Ltd. has spent two decades developing
nickel alloy process know-how — from the resistance alloys it
started with in 2002 to the full nickel-based family it produces
today. That development record is what makes precision work
possible: temper control, dimensional stability and repeatable
mechanical properties are engineered into the bar, not improvised
at the machine. Every grade from N4 to Ni201 runs on a controlled
12,000 m² nickel-only line, so machining projects get a material
that behaves the same from heat to heat and from order to order.
How do these bars machine?
Annealed bars hold a stable 90-120 HB range for predictable
cutting, and ≥35% elongation reduces edge cracking during drilling
and threading. Cold-worked tempers are available where the finished
part needs higher strength.
What tolerances can DLX hold?
Tolerances are set per drawing and locked at drawing review —
diameter, length, straightness and surface are confirmed before
production. There is no standard catalog range; specify your
drawing.
What sizes are available?
Custom sizes per drawing, with popular diameters held in stock for
fast dispatch.
What is the MOQ for bars?
10 kg for custom bars — the minimum covers drawing setup and heat
allocation so tolerances can be locked per drawing. Other pure
nickel forms, such as wire and strip, are available at 5 kg MOQ.
What certificates are provided?
Every delivery includes EN 10204 3.1 MTC with heat number and batch
traceability, backed by ISO9001 and SGS certification. Bars meet
ASTM B160 (Ni200/Ni201) and GB/T 4435-2010 (N4/N6).
