Sheet metal fabrication tolerance specification is the single most consequential decision on any engineering drawing. Over-specify and you add 20–50% to sheet metal fabrication price for no functional gain. Under-specify and mating parts fail to assemble. This guide explains ISO 2768 — the international standard that governs sheet metal fabrication tolerances — documents what each process actually achieves, and gives engineers a practical framework for every drawing.
Manufyn’s precision sheet metal fabrication service achieves laser cutting to ±0.05mm and CNC bending to ±0.1° — with free DFM review to confirm your sheet metal fabrication tolerance requirements are achievable before any material is cut.
What Determines Sheet Metal Fabrication Price
Sheet metal fabrication price is determined by six variables: (1) material type and grade, (2) part complexity, bend count, weld length, feature density, (3) quantity, setup cost divided across the run, (4) surface finish, bare to hard anodise, (5) lead time, standard vs express, (6) country of manufacture. Sourcing through Manufyn’s sheet metal fabrication service from India reduces variables 2–6 by 40–60% vs US or UK domestic rates at the same ISO 9001 quality standard.
Sheet Metal Fabrication Price Factor 1: Material
Material is typically 30–50% of total sheet metal fabrication price for standard parts. Formula: blank weight (kg) × material price ($/kg) × scrap factor (1.10–1.18). See our complete sheet metal materials guide for full grade breakdowns including aluminium, stainless and mild steel.
| Material | USD/kg | vs Mild Steel Baseline | Scrap Factor |
|---|---|---|---|
| Mild Steel DC01 | $0.90–$1.20 | 1.0× (baseline) | 8–12% |
| Galvanised Steel G90 | $1.10–$1.50 | 1.3× | 8–12% |
| Aluminium 5052-H32 | $3.20–$4.50 | 3.5× | 10–15% |
| Aluminium 6061-T6 | $3.50–$4.80 | 3.8× | 10–15% |
| Stainless Steel 304 | $4.00–$5.50 | 4.5× | 10–15% |
| Stainless Steel 316 | $5.00–$7.00 | 5.5× | 10–15% |
| Copper C101 | $9.00–$12.00 | 10× | 12–18% |
Sheet Metal Fabrication Price Factor 2: Processing, India Saves 40–65%
Processing cost is where the sheet metal fabrication price difference between India and the UK or US is most dramatic. Same machines. Same CNC processes. Same ISO 9001 quality standard. The gap is structural, driven by India’s labour and facility cost, not by any quality compromise.
| Operation | Manufyn India Rate | UK / US Rate | India Saving on Sheet Metal Price |
|---|---|---|---|
| Fibre laser cutting | $25–40/hr | $80–150/hr | 50–70% |
| CNC press brake | $20–35/hr | $70–120/hr | 55–70% |
| MIG welding | $20–35/hr | $70–120/hr | 55–70% |
| TIG welding | $25–40/hr | $80–140/hr | 50–70% |
| Powder coating | $15–25/hr | $50–90/hr | 55–70% |
| CMM inspection | $15–25/hr | $50–80/hr | 55–70% |
Sheet Metal Fabrication Price Factor 3: Bend Count
Every bend adds fixed setup time plus run time, directly increasing sheet metal fabrication price. To reduce price through design, see our DFM sheet metal design guide, it documents exactly how to consolidate bends and eliminate costly features.
- 1–3 bends: lowest forming cost, simple brackets, flanges
- 4–6 bends: standard enclosure complexity
- 7–12 bends: complex chassis, sequence planning needed, higher cost
- 12+ bends: specialist forming, discuss with Manufyn engineers before ordering
Sheet Metal Fabrication Price Factor 4: Quantity, Setup Amortisation
Setup cost is fixed regardless of quantity. This is the biggest lever on sheet metal fabrication price, the cost curve is steepest in the 1–50 piece range:
| Quantity | Setup/Unit | Material | Run+Finish | Inspection | Unit Total | vs 1pc |
|---|---|---|---|---|---|---|
| 1 pc | $45.00 | $8.50 | $11.00 | $14.00 | $78.50 | 100% |
| 5 pcs | $9.00 | $8.50 | $11.00 | $3.50 | $32.00 | 41% |
| 10 pcs | $4.50 | $8.50 | $10.70 | $2.50 | $26.20 | 33% |
| 25 pcs | $1.80 | $8.20 | $10.50 | $1.20 | $21.70 | 28% |
| 50 pcs | $0.90 | $8.00 | $10.30 | $0.90 | $20.10 | 26% |
| 100 pcs | $0.45 | $7.80 | $10.10 | $0.50 | $18.85 | 24% |
| 500 pcs | $0.09 | $7.50 | $9.70 | $0.15 | $17.44 | 22% |
Example: 2mm mild steel enclosure, 6 bends, MIG welded, powder coat black, Manufyn India. For MOQ and batch size strategy, see our sheet metal batch sizes guide.
For MOQ and batch size strategy, see our sheet metal fabrication batch sizes guide.
Sheet Metal Fabrication Price Factor 5: Surface Finish
| Finish | Price Adder vs Base Part | When to Specify |
|---|---|---|
| Bare / degreased | None | Customer applies finish post-assembly |
| Powder coat (1 coat) | +15–25% | Standard industrial, RAL colour |
| Powder coat (2-coat) | +25–40% | Heavy-duty outdoor environments |
| Zinc electroplate | +15–25% | Mild steel indoor corrosion protection |
| Anodise Type II clear | +20–35% | Aluminium, standard decorative finish |
| Anodise Type II colour | +25–45% | Aluminium, black or custom colour |
| Anodise Type III hard | +40–70% | Aluminium, wear-resistant engineering surface |
| Passivation (SS) | +5–10% | Stainless, restore weld zone corrosion resistance |
Sheet Metal Fabrication Price Factor 6: India vs UK/US, Landed Cost Comparison
The single largest sheet metal fabrication price lever is country of manufacture. For US buyers, India also has a Section 301 tariff exemption advantage over China, 25% additional duty applies to Chinese metal fabrications, not Indian.
| Part Example | UK Domestic | Manufyn India Landed UK | Total Saving |
|---|---|---|---|
| Mild steel bracket, 50 pcs, powder coat | £8.50/ea | £3.20/ea + £75 freight = £235 total | ~45% |
| Aluminium 5052 enclosure, 50 pcs, anodised | £42/ea | £14/ea + £85 freight = £785 total | ~63% |
| SS 304 panel, 20 pcs, passivated + brushed | £68/ea | £26/ea + £70 freight = £590 total | ~57% |
| Complex weldment, 25 pcs, epoxy painted | £95/ea | £38/ea + £80 freight = £1,030 total | ~57% |
Free 10-Step Sheet Metal Fabrication Price Worksheet
| Step | Variable | Calculate As | Your Estimate |
|---|---|---|---|
| 1 | Material type | Select $/kg from table above | $/kg = __ |
| 2 | Blank weight | Unfolded area (m²) × thickness (m) × density (kg/m³) | __ kg/part |
| 3 | Material cost | Weight × $/kg × scrap factor 1.12 | USD __ |
| 4 | Laser cutting | Profile length (m) × cut speed × machine rate | USD __ |
| 5 | Bending | No. bends × 2–5 min avg × machine rate | USD __ |
| 6 | Welding (if reqd) | Weld length (m) × 0.5–1 hr/m × rate | USD __ |
| 7 | Surface finish | Surface area (m²) × finishing rate/m² | USD __ |
| 8 | Setup amortisation | Setup total ÷ quantity | USD __ |
| 9 | Inspection | Prototype $15; production $0.50–$2 | USD __ |
| 10 | Freight (India) | Chargeable weight (kg) × $/kg | USD __ |
Email your drawing to info@manufyn.com or request a 24-hour sheet metal fabrication price quote, itemised breakdown, no commitment. Prototype orders: see our prototyping service from India.
Frequently Asked Questions, Sheet Metal Fabrication Price
Sheet metal fabrication price per piece depends on material, complexity, quantity and country. A simple mild steel bracket at 100 pieces from Manufyn India is typically $7–12 each. An aluminium enclosure with 6 bends at 50 pieces is typically $14–25 each. Request a 24-hour itemised quote for your specific part.
India’s sheet metal fabrication price advantage comes from labour rates of $4–8/hr vs $35–55/hr in UK/US, plus lower facility overhead, not lower quality or precision. Manufyn operates ISO 9001 certified facilities with the same CNC laser, press brake and welding equipment. Net saving after freight is 35–55% for most parts. See our India vs China comparison for the US Section 301 tariff analysis.
Manufyn has no minimum order quantity. Prototype sheet metal fabrication from 1 piece is accepted at prototype pricing. Production pricing from 10+ pieces. Most cost-effective quantity: 50–100 pieces, setup cost well amortised.
Five most effective reductions: (1) increase quantity to amortise setup cost, (2) reduce bend count, see our DFM design guide; (3) use ISO 2768-m general tolerances, see our ISO 2768 tolerances guide; (4) source from India, 35–55% saving after freight; (5) provide STEP + DXF + PDF instead of PDF-only, eliminates re-drawing cost and speeds quote turnaround.
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