Custom Metal Stamping Parts: From RFQ to Delivery

Ordering custom metal stamped parts involves more than sending a drawing and waiting for quotes. The process from initial RFQ (Request for Quotation) to production delivery typically spans 8–16 weeks and involves engineering review, tooling design, first-article approval, and production ramp-up. Understanding each phase helps buyers set realistic timelines, reduce back-and-forth, and avoid costly surprises.

At Metal Stamping Parts, we process over 500 RFQs annually from global OEMs and tier-1 suppliers. This guide walks through our standard workflow — from the moment you submit drawings to the day finished parts arrive at your dock.

RFQ (Request for Quotation) is a formal document or package sent by a buyer to potential suppliers, containing part drawings, material specifications, volume forecasts, quality requirements, and delivery expectations, requesting a price and lead time proposal.

Phase 1: RFQ Submission and Engineering Review (Week 1–2)

A complete RFQ package gets faster, more accurate quotes. Incomplete RFQs cause delays — our data shows that 40% of initial RFQs require follow-up questions that add 3–5 business days to the quoting process.

What to Include in Your RFQ

• Part drawings — 2D PDF with dimensions and tolerances + 3D CAD (STEP/IGES preferred). GD&T callouts reduce ambiguity.
• Material specification — grade, temper, thickness, and applicable standard (e.g., “SPCC, 1.0mm, per JIS G3141”). If flexible, state acceptable alternatives.
• Annual volume and batch size — tooling amortization depends heavily on total program volume. State estimated annual usage and typical order quantity.
• Quality requirements — critical dimensions, surface finish spec, cosmetic requirements, PPAP level (if automotive), and any special testing (salt spray, hardness, etc.).
• Assembly context — how the part fits into the assembly. This helps the stamper suggest DFM improvements.
• Delivery timeline — target date for first samples and production start.

Supplier Engineering Review

A qualified stamper reviews your drawings for manufacturability before quoting. This DFM (Design for Manufacturability) review typically identifies:

• Tolerance feasibility — can the specified tolerances be achieved with stamping, or does the part need secondary machining?
• Material formability — does the alloy have sufficient elongation and draw ratio for the geometry? FEA simulation may be needed for complex forms.
• Die concept — progressive die vs. transfer die vs. single-hit; estimated number of stations; estimated tooling cost.
• Cost reduction opportunities — material substitution, tolerance relaxation, design changes that simplify the die.

Phase 2: Quotation and Negotiation (Week 2–3)

A professional stamping quote includes much more than a unit price. Request quotes that break out:

• Tooling cost — one-time NRE (Non-Recurring Engineering) for die design and fabrication. Progressive dies: $15,000–$250,000 depending on complexity.
• Unit price — per-part cost including material, labor, overhead, surface finishing, and packaging. Specify the volume at which the unit price applies.
• Sample cost — first-article samples may be billed separately or amortized into production.
• Lead time — tooling fabrication (4–10 weeks), first samples (1–2 weeks after tooling), production ramp-up (2–4 weeks).
• Payment terms — typical: 50% tooling deposit on order, 50% on sample approval; production terms Net 30–60.

Comparing Quotes Effectively

Lowest unit price does not mean lowest total cost. Evaluate quotes across these dimensions:

Phase 3: Tooling Design and Approval (Week 3–6)

After order placement, the stamper’s tooling engineering team designs the die. This is the most critical phase — a well-designed die produces consistent parts for millions of hits with minimal maintenance.

Die Design Process

• Strip layout — determines material utilization (target: 65–80%), station sequence, and carrier design for progressive dies.
• Forming simulation — FEA predicts thinning, cracking, wrinkling, and springback before steel is cut. This step alone prevents 60–70% of tryout issues.
• Die component design — punch, die, stripper, and pad details with material selection (D2, DC53, carbide for high-volume).
• Tooling drawing approval — the buyer reviews and approves the die design before fabrication begins.

What Buyers Should Review in Die Design

• Material utilization rate (scrap percentage)
• Number of stations and die length
• Die material grade (affects die life and maintenance interval)
• Inspection and sensing provisions (in-die sensors for critical features)
• Maintenance accessibility (can worn components be replaced without full teardown?)

Phase 4: Tooling Fabrication (Week 4–10)

Die fabrication is the longest phase. Timelines depend on complexity:

• Simple single-station dies (blanking, piercing): 2–3 weeks
• Progressive dies with 3–8 stations: 4–6 weeks
• Complex progressive or transfer dies (10+ stations): 6–10 weeks
• Rush/expedited tooling: 30–40% time reduction at premium cost

During fabrication, the stamper should provide progress updates with photos. At Metal Stamping Parts, we send weekly tooling progress reports including CNC machining photos, wire EDM photos, and assembly photos — so buyers have full visibility into the build.

Phase 5: First Article Samples and Approval (Week 8–12)

First Article Inspection (FAI) is a documented dimensional verification of the first parts produced from a new die, comparing every dimension on the drawing to actual measured values. FAI confirms the die produces parts within specification before production ramp-up.

The tryout process runs the die on the production press with the specified material. Parts from the tryout are measured and documented:

• Dimensional layout report — every dimension measured on a CMM with actual vs. nominal values
• Material certification — confirming the correct alloy, temper, and thickness was used
• Surface finish verification — if plating or coating is specified, verify the finish meets spec
• Sample shipment — typically 20–50 first-article parts sent to the buyer for assembly validation

Buyer reviews the FAI report and sample parts. If dimensions are within spec and assembly testing passes, the buyer approves tooling and authorizes production. If issues are found, the stamper modifies the die and submits revised samples.

Phase 6: Production Ramp-Up (Week 10–14)

After first-article approval, production begins. The ramp-up phase includes:

• Process qualification — run 300–1,500 parts to verify process stability. Measure Cpk on critical dimensions (target: Cpk ≥ 1.33 for general, ≥ 1.67 for safety-critical).
• Control plan — documented inspection frequency, measurement methods, and reaction plan for out-of-spec conditions.
• Packaging specification — custom trays, dividers, or foam inserts to prevent damage during shipping. Specify stacking limits and moisture protection for sea freight.
• Production release — formal authorization to begin full-rate production.

Phase 7: Ongoing Production and Delivery

Once production is running, the focus shifts to consistency and logistics:

• SPC monitoring — statistical process control on critical dimensions. SPC charts should be available for buyer review.
• Periodic inspection reports — dimensional reports with each shipment or at agreed frequency.
• Die maintenance — preventive regrinding and component replacement based on hit count and dimensional trends.
• Shipping — FOB, CIF, DDP, or EXW per agreement. Sea freight (25–40 days), air freight (5–10 days), express courier (3–7 days).
• Engineering change management — any drawing revision requires formal ECN (Engineering Change Notice), die modification, and re-approval.

Timeline Summary

Typical total timeline: 10–14 weeks from RFQ to first production delivery for a standard progressive die part. Complex geometries or multi-part tooling packages may take 14–18 weeks.

Frequently Asked Questions

What file formats should I send for a stamping RFQ?

Send both 2D and 3D files: PDF drawing with dimensions, tolerances, and material callout, plus STEP (.stp) or IGES (.igs) 3D model. SolidWorks (.sldprt) and DWG/DXF are also widely accepted. STEP format is preferred because it is vendor-neutral and preserves geometry accurately. Include GD&T annotations on the 2D drawing to eliminate tolerance ambiguity.

How much does custom stamping tooling cost?

Tooling cost depends on part complexity and die type. Simple single-hit dies: $2,000–$8,000. Progressive dies with 3–8 stations: $15,000–$80,000. Complex progressive dies with 10+ stations: $80,000–$250,000. Transfer dies for large parts: $50,000–$200,000. Chinese tooling typically costs 40–60% less than domestic US/EU tooling for equivalent quality. Tooling is a one-time cost amortized over the program volume.

How long does it take to get first samples from a new stamping supplier?

Plan for 8–14 weeks from RFQ approval to first-article samples. Tooling fabrication is the longest phase (4–10 weeks depending on complexity). Add 1–2 weeks for tryout, measurement, and sample shipment. Rush programs can compress this to 6–10 weeks with expedited tooling scheduling. Prototype tooling (soft tooling or 3D-printed dies) can deliver samples in 2–4 weeks for design validation before committing to production tooling.

What quality certifications should I require from a stamping supplier?

At minimum, ISO 9001:2015 for general industrial parts. For automotive: IATF 16949:2016 is the standard, with PPAP Level 3 capability. For medical: ISO 13485. For aerospace: AS9100 Rev D. Beyond certifications, verify actual inspection capability (CMM, SPC), material traceability (mill certs), and die maintenance practices. A facility audit is the most reliable way to assess supplier quality.

What if my parts have quality issues after production starts?

Issue a formal Corrective Action Request (CAR) requiring root cause analysis within 5 business days. A qualified supplier will provide 8D or A3 problem-solving reports identifying the root cause, corrective action, and preventive action. If issues persist after two CARs, conduct an on-site audit. If unresolved in 30 days, qualify a backup supplier. Preventive: require SPC monitoring and periodic inspection reports as part of your supply agreement.

Can I transfer existing stamping tooling to a new supplier?

Yes, but evaluate carefully. Existing dies can be shipped to a new supplier, but the new supplier must verify the die condition, confirm compatibility with their presses (tonnage, bed size, stroke length), and run tryout parts. If the existing tooling is worn or designed for different press specifications, refurbishment or new tooling may be more cost-effective. Include tooling ownership clauses in your supply agreement to ensure you can transfer dies if needed.

Conclusion

The custom metal stamping process is a collaboration between buyer and supplier. The quality of your RFQ package directly affects quote accuracy and lead time. Choosing a supplier with in-house tooling, engineering capability, and transparent communication reduces risk and accelerates the timeline.

At Metal Stamping Parts, we handle the complete workflow from DFM review through production delivery — including in-house die design and fabrication, progressive and transfer die stamping, surface finishing, and PPAP documentation. Our engineering team communicates directly with buyers in fluent English, eliminating the coordination gaps common with overseas suppliers.

Ready to start your next stamping project? Submit your RFQ or learn more about our custom metal stamping capabilities.