Metal stamping is a vital manufacturing process that underpins many high-precision industries, from automotive to aerospace and beyond. Understanding the various techniques involved can significantly improve production efficiency, product quality, and overall manufacturing outcomes. In this article, we will delve into the metal stamping process flow chart, explore the role of dies, compare different types of stamping, and discuss gauge measurement—all essential components for engineering and procurement professionals seeking reliable custom metal stamping solutions.

What is the process of metal stamping?

The metal stamping process flow chart outlines the systematic approach to transforming raw metal into high-precision components. Here’s a step-by-step breakdown of the stamping process:

1. Customer RFQ / Print ReceivedCustomer sends a request for quote with drawings, 3D models, specs, and estimated volumes. The stamping supplier reviews this package to understand part geometry, performance requirements, and commercial expectations.
2. Feasibility & DFM ReviewEngineering evaluates whether the part can be stamped as drawn. They look at material, thickness, tolerances, and critical features. Where needed, they propose DFM (Design for Manufacturability) changes to improve tool life, reduce cost, and ensure consistent quality.
3. Quote Issued → PO ReceivedCommercial and technical inputs are combined into a formal quotation covering tooling, piece price, lead times, and terms. Once the customer accepts and issues a purchase order, the project officially kicks off.
4. Tooling DesignTooling engineers create the strip layout and progressive die (or other tool) design, determining station sequence, forming strategy, and sensor placement. The goal is to achieve all part requirements with a robust, repeatable process.
5. Tool Build & Try-OutToolroom manufactures the die components, heat treats critical elements, and assembles the tool. Initial try-outs in the press validate the design and allow tuning of clearances, forms, and timing to meet print requirements.
6. Sample Submission / PPAPParts from a controlled run are fully inspected and documented per the customer’s quality requirements (e.g., PPAP, FAI). Measurement results, capability data, and supporting documents are submitted for formal approval before mass production.
7. Production Planning & SetupOnce approved, the job is entered into the production schedule with defined routings, cycle times, and capacity plans. Work instructions, control plans, and quality check sheets are finalized for the shop floor.
8. Material Receiving & PreparationCoils or blanks are received, identified, and checked against material specifications and certs. Material may be slit or otherwise prepared to the correct width and condition for the press line.
9. Press Setup & First-Piece ApprovalThe die is installed in the press, and the feed line, lubrication, and sensors are set up for the job. After adjustments, first-piece parts are run, inspected, and approved by quality before the line is released to full production.
10. Mass Production StampingThe press runs at production speed, feeding material through the die to produce parts continuously. Operators and quality techs monitor dimensions, surface condition, and process parameters to ensure stable output and low scrap.
11. Secondary Ops (Deburr / Plate / etc.)Depending on requirements, stamped parts may go through secondary processes like deburring, tumble/vibratory finishing, heat treatment, plating, painting, or simple sub-assembly. Each step is controlled and documented to maintain traceability and quality.
12. Final InspectionFinished parts are checked against the control plan for critical dimensions, appearance, and functional features. Only the conforming product is released, and inspection records are kept for traceability and audits.
13. Packaging & ShippingParts are counted, packed, and labeled according to customer specifications (bags, trays, reels, boxes, pallets). Shipping documents are prepared, inventory is updated, and the product is dispatched to the customer’s location.

Precision and efficiency are critical in stamping, as each stage directly affects dimensional accuracy and part consistency. Each step in the stamping process step by step is designed to ensure that the final product meets stringent quality standards while minimizing waste and maximizing throughput. At Keats Manufacturing, we leverage one of the largest fleets of four-slide machines in North America to efficiently produce complex forms and bends for high-volume applications, enabling us to produce complex shapes and bends efficiently, particularly for high-volume applications.

What is a die in metal stamping?

In the context of metal stamping, a die serves as a critical tool that shapes the metal into the desired form. The function of a die is to cut, shape, and form metal through various processes. There are different types of dies used in metal stamping, including:

  • •Progressive Dies: These allow multiple operations to be performed in a single press cycle, increasing efficiency.
  • •Single-Operation Dies: These perform one operation at a time, often used for simpler shapes.
  • •Compound Dies: These can perform multiple operations but are designed for specific parts.

The role of dies in ensuring accuracy and repeatability is paramount. A well-designed die enhances final product quality while minimizing scrap, rework, and long-term production costs. At Keats, our in-house tool & die development ensures that each die is crafted to meet the highest standards, backed by a lifetime guarantee.

What are the different types of metal stamping?

Metal stamping encompasses a variety of techniques, each tailored to specific applications. Here’s an overview of the types of stamping process:

Progressive Die Stamping (High Volume, High Precision)

Progressive die stamping is one of Keats’ core strengths. A continuous strip of material feeds through multiple stations in a single die, where it is punched, formed, and cut off as a finished part. This method is ideal for high-volume programs such as terminals, connectors, busbars, and reel-to-reel products, where we routinely run into the tens of millions of parts with very tight tolerances (down to the ten-thousandths of an inch on critical features) and highly repeatable quality.

When comparing high-volume progressive stamping to other die configurations, understanding how compound and transfer dies differ can clarify which approach best fits a given application. Our blog Compound vs. Progressive vs. Transfer Die breaks down these differences in detail.

Four-Slide / Multi-Slide Stamping (Complex Forms, Minimal Scrap)

Keats is particularly known for its four-slide and multi-slide capabilities. In these machines, multiple slides form the part from different directions, making them perfect for small, intricate components with multiple bends, hooks, and locking features—like clips, clamps, and specialty springs. This process often uses less material and reduces secondary operations, giving customers a very cost-efficient solution for complex geometries.

High-Speed Reel-to-Reel Stamping (Terminals, Lead Frames & Connectors)

For electrical terminals, lead frames, and connector pins, Keats uses high-speed progressive dies running on a carrier strip (reel-to-reel). It’s ideal for automotive, appliance, telecom, and industrial electronics applications where you need high volumes, reliable strip control, and plating-ready products.

What gauge metal for stamping?

Gauge measurement is a critical factor in the metal stamping process. It refers to the thickness of the metal and is significant because it influences the strength, weight, and overall performance of the final product. Understanding how gauge works is essential for selecting the right material for your application.

Factors influencing choice:

Material Type Varying strengths affect performance.
Application Dictates required durability.
Manufacturing Process-specific limitations.

Material Common Gauge Range
Steel 10 to 28 gauge
Aluminum 12 to 24 gauge
Brass 16 to 30 gauge

Choosing the appropriate gauge is crucial for ensuring that the stamped components meet the required specifications and performance standards. At Keats, we ensure full compliance with ISO 9001, ISO 14001, and IATF 16949, guaranteeing that our processes meet rigorous quality and compliance standards.

Ready to explore the world of metal stamping?

Dive deeper into our blog for expert insights, industry trends, and tips on choosing the right custom metal stamping manufacturer for your needs. Discover how our high-volume production capabilities can transform your projects.

Frequently Asked Questions

Keats Manufacturing Co. offers a full range of precision metal stamping techniques, including blanking, bending, punching, coining, drawing, embossing, piercing, and curling, all of which are described in detail in our "Metal Stamping Techniques Explained" guide.

  • Our team utilizes advanced CAD/CAM software to optimize each stamping process for efficiency and repeatability.
  • We routinely achieve tolerances as tight as ±0.0005 inches across all techniques, which is critical for demanding industrial applications.
  • Our three state-of-the-art facilities house over 150–175 stamping and wire-forming machines, enabling us to handle both high-volume and highly specialized production runs.

Yes, Keats Manufacturing Co. specializes in producing complex stamped part geometries using advanced metal stamping methods and custom in-house tooling.

  • With over 150–175 stamping and wire-forming machines across our three facilities, we can achieve intricate features like deep draws, multi-stage bends, and tight radii, maintaining tolerances as tight as ±0.0005 in.
  • All dies and tooling are engineered and built in-house, and are backed by a lifetime guarantee, ensuring quality and reliability for complex parts.
  • Our experienced engineering team supports industries such as electronics, automotive, and aerospace with just-in-time delivery and automated assembly capabilities of up to 200 pieces per minute.

Stamped metal parts from Keats Manufacturing Co. can be enhanced with a full suite of secondary services, ensuring both functionality and finish.

  • In addition to the primary metal stamping techniques explained on this page, we offer secondary services such as plating, e-coating, heat-treating, stress relieving, powder coating, deburring, and degreasing—all coordinated by our in-house team to meet your precise requirements.
  • Keats has developed our secondary suppliers base to ensure all suppliers meet the requirements of ISO 9001:2015 & are capable of supporting Keats customers.  

Keats Manufacturing Co. delivers custom stamped metal parts rapidly by leveraging just-in-time delivery systems, automated assembly lines capable of producing up to 200 parts per minute, and over 150–175 stamping and wire-forming machines across three dedicated facilities.

  • All dies and tooling are engineered and built in-house, backed by a lifetime guarantee, ensuring consistent quality and minimal downtime.
  • Our streamlined logistics and inventory solutions are tailored to your manufacturing workflow, supporting even the highest-volume production schedules.
  • This combination of advanced automation, in-house expertise, and robust production capacity enables us to meet tight deadlines and provide reliable, on-time shipments for OEMs and supply chains requiring minimal lead times.

Yes, all metal stamping tooling and dies at Keats Manufacturing Co. are backed by a lifetime guarantee for the duration of your production run.

  • Unlike many competitors, we engineer and build all dies and tooling in-house at our facilities, ensuring complete quality control.
  • Our tooling is crafted from high-grade materials and tested for durability before deployment, supporting tolerances as tight as ±0.0005 in.
  • This commitment to robust, validated tooling helps our customers avoid costly production interruptions and ensures consistent, high-quality output for every stamping technique we offer.

Keats Manufacturing Co. can provide fully assembled stamped components, integrating multiple processes for a turnkey solution.

  • Our assembly services include part threading, screw insertion, contact staking, press-fit bolt insertion, in-line assembly, kitting, and bagging, all of which utilize the various metal stamping techniques explained on this page.
  • Automated assembly lines can process up to 200 pieces per minute, ensuring scalability and consistency.
  • By delivering complete assemblies, we help customers reduce supply chain complexity and accelerate their own production timelines.

Keats Manufacturing Co. employs several advanced metal stamping techniques to meet precise customer requirements, including progressive die stamping, transfer die stamping, and fourslide stamping. Progressive die stamping allows for high-speed production of complex parts by performing multiple operations in a single pass through the die, ideal for large volumes. Transfer die stamping is used for larger or more intricate parts, moving each part from station to station for specialized forming. Fourslide stamping enables the creation of highly complex and intricate forms, especially for wire and strip components. All dies and tooling are engineered and built in-house at Keats, with a lifetime guarantee, ensuring tight tolerances as precise as ±0.0005 in. and reliability across every stamping method.

Keats Manufacturing Co. maintains accuracy in intricate metal stamping designs by engineering and building all dies and tooling in-house, allowing for tight tolerances as precise as ±0.0005 inches. Our advanced equipment and in-house tool and die development, backed by a lifetime guarantee, ensure every component meets strict quality standards, even for the most complex designs.

Disclaimer: The information in this article is provided for general educational purposes and to promote overall awareness. It is not intended as engineering, legal, or other professional advice, and should not be used in place of consultation with qualified professionals familiar with your specific application and conditions. This content should not be considered exhaustive.

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