HP 400mm Graphite Electrode with 4TPI Nipple
The HP 400mm Graphite Electrode with 4TPI Nipple is a HP-grade 400 mm graphite electrode built for High-power electric-arc furnace / Ladle Furnace (LF). It ships as a matched electrode + nipple set. Engineered for stable current carry and low consumption, it is a cost-effective choice for overseas EAF, LF, foundry and ferroalloy buyers sourcing from a China manufacturer.
- ISO 9001 · IEC 60239
- MOQ 1 ton
- 7–30 days lead time
- FOB China
- Matched 4TPI nipple
What Are the Specifications of HP 400mm Graphite Electrode with 4TPI Nipple?
Typical values per IEC 60239; confirmed on each Mill Test Certificate (COA).
| Diameter | 400 mm |
|---|---|
| Length | Electrode + nipple set |
| Grade | HP + Nipple Set |
| Resistivity | ≤ ≤6.5 μΩ·m |
| Bulk Density | ≥ ≥1.65 g/cm³ |
| Flexural Strength | ≥ ≥10.5 MPa |
| Current Density | 16–24 A/cm² |
| Ash Content | ≤ ≤0.25 % |
| Nipple / Thread | 4TPI |
| Application | High-power electric-arc furnace / Ladle Furnace (LF) |
| Allowable Current | Includes matched nipple; allowable current ≈ 21,000–31,000 A |
| MOQ | From 1 ton (small orders and annual-frame contracts supported) |
| Certification | ISO 9001 / IEC 60239 |
Where Is the HP 400mm Graphite Electrode with 4TPI Nipple Used?
HP 400 mm electrodes suit high-power EAF and ladle furnaces (LF) - a balance of current capability and cost for refining and secondary metallurgy.
EAF / DC EAF
For electric-arc and mini-mills running high-current furnaces; low consumption per tonne of steel.
Ladle Furnace (LF)
Stable arc and lower oxidation loss during refining and secondary metallurgy.
Specialty & Stainless Steel
Consistent thermal-shock resistance where electrode breakage is costly.
Foundry & Ferroalloy (SAF)
Robust, economical choice for casting, silicon-metal and submerged-arc furnaces.
What Nipple and Threading Does the HP 400mm Graphite Electrode with 4TPI Nipple Use?
Supplied with a 4TPI nipple (pitch 6.35 mm) for finer thread engagement, torque- and gauge-matched to the electrode body to prevent joint loosening or breakage in service.
How Is the HP 400mm Graphite Electrode with 4TPI Nipple Quality Assured and Certified?
Every 400 mm electrode is produced on our integrated carbon line (formed, impregnated, baked and graphitised in-house) and inspected before packing. A Mill Test Certificate (COA) with resistivity, bulk density, flexural strength, ash and dimensions is supplied per batch, referenced to IEC 60239. Tight batch-to-batch control keeps your consumption rate predictable.
What Questions Do Buyers Ask Most About This Electrode?
See the Product Specifications table above - diameter, length, grade, resistivity, bulk density, flexural strength, current density, ash, nipple, application and allowable current. Values are typical per IEC 60239 and confirmed on the COA.
What nipple / thread does it use?It uses a 4TPI nipple (pitch 6.35 mm), torque- and gauge-matched to the electrode body.
What current can it carry?Includes matched nipple; allowable current ≈ 21,000–31,000 A
What is your MOQ and lead time?MOQ is 1 ton; standard lead time is 7–30 days by grade and length mix; annual-frame contracts supported.
Do you provide a Mill Test Certificate (COA)?Yes - a COA with all key physical properties and dimensions is supplied per batch per IEC 60239.
Does this product include the nipple?Yes - this is a matched electrode + 4TPI nipple set, ready to assemble. Nipples are gauge-checked before packing.
Which Other 400mm Electrodes Are Related to This One?
How Can You Request a Quote for the HP 400mm Graphite Electrode with 4TPI Nipple?
Tell us your furnace type, grade, length and volume - we reply with specifications, COA sample and FOB pricing.
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