Anvil: Diameter 3.2-5.6 mm, Height 1.8-3.2 mm

Component Specifications

Definition

The anvil is a critical precision component in percussion primer assemblies used in ammunition and industrial detonation systems. It consists of a hardened metal structure with specific geometric features designed to concentrate impact force from a firing pin onto a sensitive explosive compound. This component ensures reliable ignition by creating localized pressure and friction at the precise moment of impact, initiating the primary explosive material. Anvils are engineered to withstand repeated mechanical stress while maintaining dimensional stability under varying environmental conditions.

Working Principle

The anvil operates on the principle of impact concentration and force transmission. When struck by a firing pin, the anvil's geometry focuses kinetic energy onto a small area of sensitive explosive material (typically lead styphnate or similar compound). This creates localized pressure exceeding 30,000 psi and generates sufficient friction heat (approximately 300-400°C) to initiate deflagration. The anvil's design ensures consistent energy transfer regardless of slight variations in impact angle or force, providing reliable ignition across operational parameters.

Materials

High-carbon steel (AISI 1095 or equivalent), case-hardened to 58-62 HRC surface hardness with core toughness of 40-45 HRC. Alternative materials include precipitation-hardened stainless steel (17-4 PH) for corrosive environments or tungsten carbide for extreme wear applications. Surface finish: 0.8-1.6 μm Ra. Heat treatment: Quenched and tempered to achieve specified hardness gradient.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Height	1.8-3.2 mm
Weight	0.15-0.45 g
Diameter	3.2-5.6 mm
Hardness	58-62 HRC
Concentricity	0.01 mm TIR
Impact Resistance	≥50,000 cycles
Surface Roughness	0.8-1.6 μm Ra
Flatness Tolerance	±0.005 mm

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 9001:2015, ISO 17025, DIN 10204, SAE AMS 2759

Engineering Analysis

Risks & Mitigation

Material fatigue from cyclic loading
Dimensional instability from improper heat treatment
Corrosion in humid environments
Brittle fracture from excessive hardness

FMEA Triads

Trigger: Insufficient case depth during hardening
Failure: Surface deformation under impact
Mitigation: Implement statistical process control for heat treatment parameters and conduct regular microhardness testing

Trigger: Material impurities in steel alloy
Failure: Brittle fracture during operation
Mitigation: Source materials with certified chemical composition and implement ultrasonic testing for internal defects

Trigger: Geometric tolerance stack-up in assembly
Failure: Inconsistent ignition energy transfer
Mitigation: Apply Six Sigma methodologies to critical dimensions and implement automated optical inspection

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Geometric dimensioning and tolerancing per ASME Y14.5, Critical dimensions: ±0.005 mm, Non-critical: ±0.02 mm

Test Method

Destructive testing: Impact fatigue (MIL-STD-331), Non-destructive: Eddy current for surface defects, Coordinate measuring machine for dimensional verification, Salt spray testing per ASTM B117 for corrosion resistance

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Anvil

Manufacturer profiles associated with Anvil.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the primary function of an anvil in percussion primer assemblies?

The anvil provides a rigid, precisely engineered striking surface that concentrates impact force from a firing pin onto sensitive explosive material, ensuring reliable ignition through localized pressure and friction generation.

Why is material hardness critical for anvil components?

High hardness (58-62 HRC) prevents deformation during impact, maintains geometric integrity for consistent energy transfer, and extends service life by resisting wear from repeated strikes.

What are common failure modes for anvil components?

Primary failures include surface spalling from fatigue, dimensional deformation from improper heat treatment, and corrosion pitting in harsh environments, all of which can cause misfires or inconsistent ignition.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Anvil