AUS-10 is a practical middle lane for knife programs that need better carbon and vanadium than AUS-8 without paying VG-10 money. It works well for kitchen knives and folding knives when the heat-treat window is written clearly. The risky line on a PO is just “AUS-10 stainless steel.” We saw one buyer send exactly that, with no HRC, blade thickness, or finish target; QC pulled the sample at 56 HRC on the Rockwell tester, and the edge rolled after 30 cuts on rope. That is the wrong question to ask. Steel grade alone does not stop soft blades, bent tips, weak edges, or satin finish drifting from batch 1 to batch 2.
At TANGFORGE, we run OEM and ODM knife production in Yangjiang, Zhejiang, China for importers and brand owners that need repeat orders to match the approved sample. For AUS-10 knife OEM projects, our normal production reference is 58–60 HRC for kitchen knives, 59–61 HRC for pocket and outdoor knives, MOQ from 300–1,000 pcs per SKU, and mass production lead time around 35–55 days after sample approval. On the grinding line, we check blade thickness with a digital caliper before handle assembly because a 0.3 mm miss at the tip can turn into buyer pushback after arrival inspection.
Why AUS-10 needs tighter specs
AUS-10 is not a magic word. It is a Japanese stainless steel grade with roughly 1.05% carbon, chromium for corrosion resistance, plus vanadium to slow edge wear. On our Rockwell tester, a properly heat-treated kitchen blade usually sits around 59-61 HRC and still takes a clean re-sharpening on a 1000 grit stone. Bad heat treatment shows fast. QC pulled one sample last year that read 56 HRC at the heel and 60 HRC near the tip; at that point, AUS-10 is just an expensive stamp on an average blade.
For a buyer, variation is the risk that eats margin. Two factories can both quote “AUS-10” and ship knives that behave nothing alike. One factory may run verified coil or plate stock with incoming material records, heat-lot numbers, and a PMI report before blanking. Another may buy 3 tons of spot-market steel and only check hardness after the grinding line has already shaped 8,000 blades. The quotes look fine until the buyer tests edge retention, salt-spray marks, and batch-to-batch consistency. We have seen this go sideways.
Your AUS-10 knife quality checklist should start with the job the knife must do. A chef knife for vegetables needs a thin edge, often 0.25-0.35 mm before sharpening, with polishing good enough that food does not drag. A pocket knife is a different build: pivot fit, lock engagement, and tip toughness matter more than mirror shine. A hunting knife needs more belly strength, plus handle material that does not get slick with oil, water, or cold hands. If the application is not written down, the steel choice becomes the wrong question to ask.
For most TANGFORGE programs in Yangjiang, China, we write the steel grade, HRC range, blade thickness tolerance, surface finish, edge angle, and packaging test standard into the purchase specification. Put numbers beside each line: for example, 2.0 mm blade spine ±0.15 mm, 15° per side edge angle, and a 1.2 m carton drop test after inner box packing. A capable factory can quote from that and push back where the math does not work. A weak factory will dodge the details or answer with “standard quality”; that is useful information before you pay for tooling or open a 1,000 pcs MOQ trial order.
Core buyer specification checklist
Do not send a PO with only drawings and a steel name. AUS-10 changes fast with heat treatment, edge geometry, and grinding quality; a checklist that QC cannot check with a Rockwell tester, digital caliper, or edge-angle gauge is just decoration. We have seen this go sideways when the buyer wrote “AUS-10 chef knife” on the PO and QC pulled the sample at 56 HRC.
- Steel grade: AUS-10 only, or AUS-10 equivalent only after written approval. Ask for one mill certificate or material declaration for every steel batch; we attach the heat number to the incoming-material record.
- Hardness: 58–60 HRC for most kitchen knives; 59–61 HRC for pocket, hunting, and tactical blades in batches over 300 pcs. Do not push above 61 HRC unless you accept more edge chipping in drop tests and carton-return photos.
- Blade thickness: define tolerance, such as 2.0 mm ±0.15 mm for chef knives or 3.2 mm ±0.20 mm for outdoor knives. QC should check spine thickness at 3 fixed points, not just near the handle.
- Edge angle: 15°–17° per side for slicing kitchen knives; 18°–22° per side for folding or hunting knives. The grinding line needs this before mass production, because reworking 1,000 pcs after sharpening burns time and margin.
- Surface finish: satin with one-direction hairline marks, mirror with no cloudy buffing patch, stonewash with approved media size, black coating with adhesion test, bead blast with even texture, or Damascus cladding effect if applicable. Define scratch direction and visible defect limits under 600–800 lux inspection light.
- Handle fit: maximum step or gap should usually be less than 0.20 mm on premium kitchen knives and less than 0.30 mm on outdoor handles. A 0.05 mm feeler gauge catches problems that photos miss.
- Compliance: REACH for EU, LFGB or FDA for food-contact parts, plus packaging labeling rules for your market. If the PO says FDA but the carton artwork says LFGB, the buyer will flag it before shipment.
If you are building a custom AUS-10 knife, freeze the sample after 1–2 revision rounds. Keep one approved sample at your office and one sealed golden sample at the AUS-10 knife factory China side; we run a red seal tag with the date, SKU, and buyer signature, then QC uses it against blade profile, logo position, finish, handle color, sheath fit, retail box layout, and barcode placement. Asking for “small improvements” after the golden sample is the wrong question to ask unless you also reopen price, lead time, and MOQ.
MOQ, price, and lead time reality
AUS-10 knife MOQ is not decided by the steel name on the quote sheet. It is driven by the handle construction, retail box, surface finish, and tooling work behind the item. We run shared blanks for some fixed-blade outdoor models, so those can start lower after the logo film and carton mark are confirmed. A new folding knife is different. If the drawing needs custom lock geometry, CNC scales with ±0.05 mm fit, new clip tooling, and a color box with foam insert, the order needs more units or the setup math does not work.
At TANGFORGE, a practical AUS-10 knife MOQ is 300 pcs per SKU for some standard kitchen or outdoor designs with logo customization. For a fully custom AUS-10 knife, 500–1,000 pcs per SKU is more realistic. For pocket knives with CNC handles and liner lock or frame lock adjustment, plan from 800–1,200 pcs unless you accept higher unit cost. We had one buyer push back on 1,000 pcs for a frame-lock sample, but QC pulled the sample after the lock face showed uneven contact under the feeler gauge. Cheap MOQ would not fix that.
| Project type | Typical MOQ | FOB reference price | Sample time | Mass lead time |
|---|---|---|---|---|
| AUS-10 kitchen knife, private label | 300–500 pcs | USD 5.80–12.50 | 10–18 days | 35–45 days |
| Custom AUS-10 chef knife set | 500–1,000 sets | USD 18.00–48.00 | 15–25 days | 45–60 days |
| AUS-10 pocket knife OEM | 800–1,200 pcs | USD 9.80–22.00 | 20–30 days | 50–65 days |
| AUS-10 hunting or tactical knife | 500–1,000 pcs | USD 8.50–18.50 | 15–25 days | 40–55 days |
These are working numbers, not promises for every drawing. Use them to catch weak quotes. If one China supplier quotes 40% below market and accepts 100 pcs for a complex new pocket knife, this is the wrong question to ask: “Can you do it?” Ask what is being cut. We have seen this go sideways when the PO says AUS-10 but the mill sheet is missing, the hardness log has only 3 readings, or the inner box fails a 1 m drop test before shipment.
Heat treatment and HRC control
Heat treatment is the point where AUS-10 either earns the price or becomes a return problem. We run controlled austenitizing, oil or plate quench depending on blade type, then tempering on a fixed furnace card. Cryogenic treatment helps on some orders, especially when our HRC coupon shows retained austenite risk, but it cannot cover for a drifting furnace or mixed baskets. The grinding line will not save a bad heat lot.
Your factory should record heat lot numbers, furnace date, operator, target HRC, and sample test results. For production, we normally test hardness on at least 3–5 blades per heat lot, depending on order size and risk level. On a 5,000 pcs order across several SKUs, ask for heat lot traceability, not one soft sentence in the QC report. We had a buyer flag this last year after the PO listed AUS-10, but the inspection file only said “stainless steel passed.”
For AUS-10 kitchen knives, 58–60 HRC is usually the safe commercial band. It holds an edge well and cuts down chipping claims from home users who hit frozen food, glass boards, or chicken bones. For tactical or pocket knives, 59–61 HRC can work if the edge angle and blade thickness support it. A thin 15° edge at 61 HRC looks sharp in a catalog; QC pulled the sample after two cardboard twist cuts, and the buyer was right to push back.
Do not accept “about 60 HRC” as a QC standard. That is the wrong question to ask. Write the acceptable range and rejection rule. Example: target 59 HRC, acceptable 58–60 HRC, any blade below 57.5 or above 60.5 rejected. For a stricter program, request Rockwell testing records and third-party spot checks during pre-shipment inspection; we normally mark the test point near the ricasso so the visible blade face stays clean. A serious AUS-10 knife factory China partner should not object to this.
QC risks buyers often miss
Most AUS-10 claims we see are not about the steel stamp. They start with workmanship nobody locked down on the PO. QC pulled one 8-inch chef sample last month at 59 HRC, within spec, but the tip sat 1.4 mm off center and the laser logo faded after tape rub. That order would pass a lazy hardness check and still get rejected by a retail buyer.
Blade straightness causes plenty of trouble. Thin chef knives can move during heat treatment, then the grinding line makes it worse if the operator chases a heavy bevel on one side. Set the limit in writing: blade center deviation under 1.0 mm for kitchen knives, checked on a flat inspection fixture with a feeler gauge. For pocket knives, check blade centering closed and open, lock engagement, detent pull, and opening feel across at least 32 pieces per lot. Photos lie. A folding knife can look clean on WeChat and still fail when lockup shifts from 25% to 70% across cartons.
Corrosion resistance needs a real check, not a “stainless” label. AUS-10 is stainless, not rust-proof. Bead-blasted blades stain faster than satin or polished blades because the surface holds moisture in the rough peaks. If the goods are going to Florida, Dubai, or any humid market, run a salt spray reference test or at least a 24-hour humidity and water-spot check on finished blades. For kitchen knives, we also put lemon juice and tomato paste on 3 samples for a quick food-acid read. The wrong question is “Is it AUS-10?” The better question is “What finish and cleaning claim can this blade survive?”
Packaging is the QC risk buyers remember only after the first bad shipment. If you use magnetic gift boxes, clamshells, sheath cards, or Amazon FNSKU labels, write drop test and barcode scan checks into the spec. A typical export carton should survive a 76 cm drop test on edges and corners for 6 common retail programs we ship. In our Yangjiang, Zhejiang production flow, we inspect blade, handle, logo, packaging, and carton markings as separate gates; once a PO had “matte black box” typed as “mate black box,” and the buyer flagged it only after pre-shipment photos. Mixing everything into one final check catches problems too late.
Inspection plan before shipment
Lock the inspection plan before deposit. After 68 cartons are taped and strapped, the math doesn't work. For a normal B2B AUS-10 knife order, we run incoming steel check with a PMI gun, first-piece check on the logo and edge angle, patrol inspection on the grinding line, final random inspection, and container loading watch for higher-value shipments. ISO 9001-style records are fine, but a stamped form means little if nobody checked blade straightness with a 0.10 mm feeler gauge.
For final inspection, buyers often use ANSI/ASQ Z1.4 sampling with AQL 2.5 for major defects and AQL 4.0 for minor defects. Critical defects should be zero tolerance. We treat a broken tip or unsafe lock failure as shipment-stop issues. Same for an exposed sharp burr on the handle, wrong steel grade, missing warning label, or a carton mark that customs cannot match to the PO. QC pulled one sample last season where “AUS-10” was printed as “AUS-1O”; the buyer flagged it before we booked the vessel.
Define defect categories in plain words, not soft supplier language. Major defects include HRC outside the approved range, loose handle scales with visible gap over 0.20 mm, blade wobble, wrong logo position, scratches across the primary bevel, weak sheath retention, non-scannable barcode, or retail box color error against the signed sample. Minor defects include small finish marks inside the agreed area, slight handle color variation within the tolerance card, or carton scuffing that does not break the corrugated board. This is the wrong question to ask: “Is it acceptable?” Ask, “Would my retailer reject this at receiving?”
If the order is time-sensitive, ask for a 20% in-line inspection instead of waiting for final inspection. At TANGFORGE, our monthly capacity is about 180,000–220,000 knives across kitchen, outdoor, pocket, and Damascus programs, so production moves fast once grinding and assembly start. Catching a wrong 15° edge angle at 20% completion costs a line reset and maybe 4 hours. Finding it at 100% packed goods means 12 days of rework vs 18 days if new gift boxes must be printed, plus the kind of emails nobody wants with a sales channel already chasing stock.
How to brief your OEM factory
A tight RFQ beats hard bargaining. Send the factory a tech pack we can quote from without guessing: 2D drawing or 3D file with blade length in mm, AUS-10 steel grade, target HRC band, spine thickness, edge angle, surface finish, handle material, logo method, sheath or box drawing, target market, compliance requirements, order quantity, delivery terms, and inspection standard. We had one PO last month with “black handle” only; QC pulled the sample and found two different G10 textures on the approval table. If you need DDP pricing to a US or EU warehouse, say it at RFQ stage because duty rate, courier channel, master carton size, and pallet plan can move landed cost by 8% to 15%.
For private label AUS-10 runs, laser engraving is usually the safest logo choice. It holds clean on satin blades and does not slow the grinding line. Etching works for marks above about 35 mm wide, but the buyer should approve a strike-off before mass production. Deep engraving or color-filled logos cost more and can add 5 to 7 days, especially when the fill must survive tape testing. For kitchen knives with food-contact packaging, check ink, glue, and insert board against your destination rules. For EU sales, handle REACH and LFGB before artwork goes to plate making; reprinting 3,000 color boxes because of one missing symbol is painful.
Tell us the sales channel early. Amazon FBA needs FNSKU placement, polybag suffocation warnings where applicable, carton weight control, and labels that scan after shrink wrap. Retail distributors ask for hang holes, multilingual warnings, EAN codes, and carton assortment marks; one buyer flagged a 2 mm hang-hole shift because it made the peg display lean. Chef channels are different. They will forgive a plain kraft box faster than a handle hot spot or a balance point sitting 25 mm too far back.
A serious OEM factory in China should push back on weak specs. If you ask for 61 HRC, 13° per side, mirror polish, walnut handle, retail box, and a low target price, the math does not work. We should show the trade-offs: lower polish, adjusted edge angle, different handle grade, or MOQ change from 500 pcs to 1,000 pcs. This is the wrong question to ask: “Can you do it?” Better ask, “Which spec will fail first in production or after sale?” You want the supplier who stops a risky sample on the hardness tester before shipment, not the one who says yes until the first return report lands.
Frequently asked questions
For most AUS-10 knife OEM projects, a realistic MOQ is 300–500 pcs per SKU for standard kitchen or fixed-blade designs with logo and packaging changes. Fully custom AUS-10 knife designs usually start at 500–1,000 pcs per SKU because new grinding fixtures, CNC handle work, packaging setup, and QC validation must be spread across enough units. Pocket knives often need 800–1,200 pcs because lock fitting, pivots, clips, screws, and handle machining add setup time. If a supplier offers 100 pcs for a complex new design at normal pricing, ask whether it is a sample batch, a stock blank, or a shortcut.
For kitchen knives, specify 58–60 HRC unless your users are trained professionals who accept a thinner, harder edge. For pocket, hunting, and tactical knives, 59–61 HRC can work, but only with suitable blade thickness and edge angle. Do not write only “60 HRC” because production has natural variation. A better standard is target 59 HRC, acceptable 58–60 HRC, with rejection below 57.5 or above 60.5. Ask your factory to test 3–5 blades per heat lot and keep records tied to the batch number.
AUS-10 usually offers better edge retention than AUS-8 because it has higher carbon content and can be hardened to a stronger working range. For private label knives, that helps you position the product above entry-level stainless steel without jumping to higher-cost powder steels. The trade-off is that heat treatment and edge geometry become more important. Poorly treated AUS-10 can chip, stain, or underperform. If your retail price allows it, AUS-10 is a strong choice for mid-range kitchen, outdoor, and folding knives, but the spec sheet must include HRC, finish, edge angle, and QC checks.
At minimum, require hardness testing, visual inspection, blade straightness, edge sharpness, handle fit, logo accuracy, packaging check, barcode scan, and carton marking verification. For folding knives, add blade centering, lock engagement, blade play, detent strength, and open-close cycle checks. For kitchen knives, add corrosion spot checks and food-contact compliance review for handle and packaging materials. Many importers use AQL 2.5 for major defects and AQL 4.0 for minor defects, with zero tolerance for critical safety defects such as lock failure, broken tips, wrong steel, or exposed sharp burrs.
FOB prices vary widely by design. A private label AUS-10 kitchen knife may run around USD 5.80–12.50, while a chef knife set can be USD 18.00–48.00 depending on handle, block, box, and quantity. AUS-10 pocket knives commonly sit around USD 9.80–22.00, especially when CNC handles, clips, coatings, and lock fitting are involved. Hunting or tactical fixed blades often land around USD 8.50–18.50. Treat very low quotes carefully. Steel verification, heat treatment, grinding time, inspection, and packaging strength all cost money.
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