Is WP still worth stocking if most of my work is DC?

Only as an AC line item. For DC work, lanthanated WL15/WL20 or ceriated WC20 give easier starts and longer tip life; many shops now standardise on one lanthanated type plus WP for AC.

Why is WP composition W >= 99.50% while doped types are higher?

Pure tungsten has no oxide addition, so its specification floor is set differently; doped grades specify the base tungsten plus a controlled oxide range per ISO 6848.

Does WP need special tip preparation?

For AC, let the tip ball naturally at moderate current; grinding a point on WP for AC shortens its life. For the rare DC use, grind a tapered point as described in our grinding guide.

WP · green tip

WP Pure Tungsten Electrode (Green Tip)

The original TIG electrode and still the right answer for AC welding of aluminium and magnesium alloys. Pure tungsten balls cleanly under AC, spreads the arc evenly across the ball, and is the lowest-cost way to stock an AC line.

What it is not: a DC electrode. On DCEN the ball migrates and the arc wanders — if your shop runs DC on steel, look at WL15/WL20 or WC20 instead.

Pure tungsten electrode WP with green ISO 6848 colour band

Tip colour per ISO 6848.

Specification at a glance

ISO 6848 designation	WP — pure tungsten, no oxide addition
Composition	W ≥ 99.50%
Colour code	Green
AWS A5.12 class	EWP (confirmed on documents)
Current type	AC (balling); not recommended for DC
Diameters	1.0 / 1.6 / 2.0 / 2.4 / 3.2 / 4.0 / 4.8 / 6.4 mm
Lengths	150 mm, 175 mm (others on request)
Surface	Ground finish, diameter tolerance h7, length ±1 mm
Packing	10 pcs tube box; 20 pcs shop box; OEM or neutral carton
MOQ	100 pcs, mixed types and sizes welcome

Where WP earns its place

AC aluminium & magnesium

The balled tip gives the wide, cleaning arc that AC aluminium work needs. Standard choice for fabrication shops welding 5xxx/6xxx alloys.

Counter stock for AC machines

Distributors serving repair and light-fab markets keep WP green next to the argon regulators — cheap, universally understood, zero compliance questions.

Where it loses

DC welding of any kind, and AC at high duty where a zirconiated WZ8 holds its ball better under load.

Pair it with

See AC aluminium applications for diameter-by-thickness guidance and the size tables for inch equivalents.

Real stock, photographed as shipped

No studio renders. These are the tube boxes, labels and cartons that leave our Baoji packing room — the same ones your incoming inspection will open.

Stacks of plastic tube boxes with 10 tungsten electrodes each in the packing room — Ground-finish electrodes packed 10 pcs per tube box, stacked for order picking.

Two tube boxes labelled 1.6 mm WL20 lanthanated and 3.2 mm WZ8 zirconiated, 10 pieces ground finish, ANSI AWS A5.12M-98 and ISO 6848 — Export labels state size, type, piece count and the standards: ANSI/AWS A5.12M, ISO 6848.

Row of labelled tungsten electrode tube boxes lined up for pre-shipment counting — Pre-shipment check row: every box counted and matched to the packing list before cartoning.

Neutral white inner boxes hand-marked WL20 1.6 and WZ8 3.2 — Neutral white inner boxes, hand-marked by type and diameter for mixed orders.

Cartons of WL20 1.6 mm and WZ8 3.2 mm electrodes stacked on a table before loading — Cartons stacked and ready: WL20 1.6 mm and WZ8 3.2 mm on one pallet.

Warehouse shelf with blue tube boxes of WZ8 2.4 x 175 mm tungsten electrodes — Tube boxes on the warehouse shelf — WZ8 2.4×175 mm lot, marked and dated.

Shop-floor clip: counting and boxing a lot before export cartoning.

Send your electrode list today

Type, diameter × length, quantity and packing — mixed sizes welcome. You get a specification-confirmed quotation with lead time, normally within 24 hours.

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