---
title: "Precision Percussion Primer Cup"
industry: "Manufacture of Weapons and Ammunition"
verification_protocol:
  urn: "URN:CNFX:ME:PRECISION_PERCUSSION_PRIMER_CUP"
  data_integrity_hash: "29ce7a4411180846a9a883f7fdab9c64"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:PRECISION_PERCUSSION_PRIMER_CUP"
  data_source_uri: "https://cnfx.com/llms/industry/manufacture-weapons-ammunition/product/precision-percussion-primer-cup.md"
  official_resource_url: "https://cnfx.com/industry/manufacture-weapons-ammunition/product/precision-percussion-primer-cup"
  is_verified_logic: true
attributes:
  primary_spec:
    status: "config-dependent"
    typical_range: "15-35 MPa (2175-5075 psi) at 20-40°C"
    unit: "mm"
  secondary_spec:
    status: "config-dependent"
    typical_range: "15-35 MPa (2175-5075 psi) at 20-40°C"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 45
    unit: "MPa"
    consequence: "Lead styphnate decomposition at 250°C initiating uncontrolled deflagration, or cup wall yielding at 45 MPa causing structural breach"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Moisture ingress exceeding 0.5% by mass in explosive compound"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hermetic sealing with laser-welded 0.1mm aluminum foil diaphragm"
  - node_2:
      trigger: "Cup wall thinning below 0.25mm from corrosion pitting"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Electroless nickel plating (50μm) with ASTM B733 Class 4 specification"
bom_nodes:
  cup-body:
    type: "component"
    urn: "URN:CNFX:ME:CUP_BODY"
    interface_type: "physical-logic-coupled"
  anvil:
    type: "component"
    urn: "URN:CNFX:ME:ANVIL"
    interface_type: "physical-logic-coupled"
  explosive-compound:
    type: "component"
    urn: "URN:CNFX:ME:EXPLOSIVE_COMPOUND"
    interface_type: "physical-logic-coupled"
  sealant:
    type: "component"
    urn: "URN:CNFX:ME:SEALANT"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/manufacture-weapons-ammunition/product/precision-percussion-primer-cup.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "22aaf3bd9312071b649b0b736247fe6050bb9b8037493cf41f5bb98b06a8af69"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Precision Percussion Primer Cup

## 1. Technical Definition
Small metallic cup containing explosive compound for initiating ammunition propellant.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **15-35 MPa (2175-5075 psi) at 20-40°C**. Failure boundary: **45 MPa (6525 psi) internal pressure or 250°C cup temperature**, Mechanism: **Lead styphnate decomposition at 250°C initiating uncontrolled deflagration, or cup wall yielding at 45 MPa causing structural breach**.

### 2.1 Analytical Physics Model
Governed by the **Thin-Wall Pressure Vessel Stress Analysis**:

> **Primary Equation**: $\sigma_h = \frac{P \cdot D}{2t}$  
> **Engineering Impact**: Determines the hoop stress boundary to prevent rupture.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| P | Internal Pressure | Engineering Constant |
| D | Diameter | Engineering Constant |
| t | Wall Thickness | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Moisture ingress exceeding 0.5% by mass in explosive compound | 8 | Partial ignition causing hangfire (0.5-2 second delay) | Hermetic sealing with laser-welded 0.1mm aluminum foil diaphragm |
| Cup wall thinning below 0.25mm from corrosion pitting | 8 | Premature rupture at 25 MPa (3625 psi) during firing | Electroless nickel plating (50μm) with ASTM B733 Class 4 specification |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| primary_spec | Config-dependent | mm | Verified |
| secondary_spec | Config-dependent | mm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Primer Cup Filling Machine**, **Primer Cup Crimping Machine**, **Explosive Compound Mixing and Metering System**  
**Downstream Applications**: Small Arms Ammunition, Artillery Shells, Mortar Rounds  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials are used in precision percussion primer cups?
**A**: Precision percussion primer cups are manufactured using copper alloy, brass, or nickel-plated steel materials to ensure durability, corrosion resistance, and consistent performance in ammunition ignition systems.

### Q: What are the key specifications for ammunition primer cups?
**A**: Critical specifications include cup depth, cup diameter, flash hole diameter, material hardness (HRB), wall thickness, and weight tolerance measured in milligrams to ensure reliable propellant initiation and ammunition performance.

### Q: What components make up a percussion primer cup assembly?
**A**: The complete assembly consists of four main components: the anvil, cup body, explosive compound, and sealant, working together to create a reliable ignition system for ammunition propellant.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Precision Percussion Primer Cup](https://cnfx.com/industry/manufacture-weapons-ammunition/product/precision-percussion-primer-cup)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: PRECISION_PERCUSSION_PRIMER_CUP | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 355caec8
