Question 1

Which FeW grade and spec should I select for tool and high-speed steels?

Accepted Answer

This grade runs W 75-82% (the common FeW80 band) with C ≤0.5%, Si ≤0.7%, Mn ≤0.25%, P ≤0.04% and S ≤0.08%. The high tungsten unit and low carbon suit HSS and tool & die grades where you control C separately and need tight residuals. For hard-facing and heat-resistant alloys the same low-P, low-S envelope protects toughness and red-hardness. Confirm your target W recovery and max C against your ladle practice before fixing the order spec.

Question 2

What addition rate should I plan for FeW?

Accepted Answer

Dosage is driven by the residual W you target in the finished steel, not a fixed percentage. For typical HSS grades carrying roughly 6-18% W, plan additions to hit that aim corrected for tungsten recovery, which is high and stable because FeW dissolves without significant fade. Add to a well-deoxidized bath, allow time for dissolution given the coarse 10-50mm sizing, and back-calculate from your COA W value rather than from a generic kg-per-tonne figure.

Question 3

How is FeW packed, and what are lead time and MOQ?

Accepted Answer

Standard sizing is 10-50mm lump, typically packed in steel drums or big-bags on pallets for this high-density unit, with weatherproof liners to keep S and P pickup out. Delivery terms can be quoted CIF Marmara or ex Gebze bonded stock; MOQ and lead time depend on grade, sizing and order volume across 5 MT LCL up to 20 MT FCL lots. Share your target W band, sizing and destination and we confirm packing, MOQ and lead time per order.

Question 4

What quality documentation comes with each FeW lot?

Accepted Answer

Each lot ships with a COA / MTC stating heat or batch ID and the assayed W plus C, Si, Mn, P and S against the grade limits. Tungsten and impurities are determined by recognised wet-chemistry and instrumental methods (XRF / ICP / combustion for C and S), with sizing verified by screen analysis. Pre-shipment sampling follows standard practice, and third-party inspection or witnessed sampling can be arranged on request so incoming results reconcile with the certificate.

Question 5

When would I substitute FeW, and with what?

Accepted Answer

FeW is the efficient route to high residual W where you need hardness, wear resistance and red-hardness in HSS and tool steels. Where the metallurgy allows, partial substitution by ferro-molybdenum is common because Mo gives a similar red-hardness contribution per unit, so many HSS grades balance W and Mo on cost and availability. For pure wear or hard-facing duty, tungsten carbide additions serve a different purpose. Match any swap to the grade's W:Mo ratio and final-property targets.

W	75-82%
C	≤ 0.5%
Si	≤ 0.7%
Mn	≤ 0.25%
P	≤ 0.04%
S	≤ 0.08%
Granulometria	10-50mm

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