---
title: "Precision Percussion Primer Assembly"
industry: "Manufacture of Weapons and Ammunition"
verification_protocol:
  urn: "URN:CNFX:ME:PRECISION_PERCUSSION_PRIMER_ASSEMBLY"
  data_integrity_hash: "71c2ae33f816d03e221cdaa043503bb1"
  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_ASSEMBLY"
  data_source_uri: "https://cnfx.com/llms/industry/manufacture-weapons-ammunition/product/precision-percussion-primer-assembly.md"
  official_resource_url: "https://cnfx.com/industry/manufacture-weapons-ammunition/product/precision-percussion-primer-assembly"
  is_verified_logic: true
attributes:
  primary_spec:
    status: "config-dependent"
    typical_range: "15-35 MPa (2175-5075 psi) detonation pressure range"
    unit: "mm"
  secondary_spec:
    status: "config-dependent"
    typical_range: "15-35 MPa (2175-5075 psi) detonation pressure range"
    unit: "N"
engineering_limits:
  max_safe_operating_point:
    value: 12
    unit: "MPa"
    consequence: "Insufficient shockwave propagation below 12 MPa fails to ignite propellant; above 40 MPa, structural yield strength of 7075-T6 aluminum (503 MPa) is exceeded, causing casing rupture"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Lead styphnate crystal degradation at 85°C for 1000 hours"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Stabilized lead azide formulation with 0.5% carboxymethylcellulose binder"
  - node_2:
      trigger: "Anvil cup deformation exceeding 0.05 mm at 25 kN impact force"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hardened 4140 steel anvil with 50 HRC minimum hardness and 0.02 mm flatness tolerance"
bom_nodes:
  primer-cup:
    type: "component"
    urn: "URN:CNFX:ME:PRIMER_CUP"
    interface_type: "physical-logic-coupled"
  anvil:
    type: "component"
    urn: "URN:CNFX:ME:ANVIL"
    interface_type: "physical-logic-coupled"
  primary-explosive:
    type: "component"
    urn: "URN:CNFX:ME:PRIMARY_EXPLOSIVE"
    interface_type: "physical-logic-coupled"
  foil-disc:
    type: "component"
    urn: "URN:CNFX:ME:FOIL_DISC"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "CE MARKING - DIRECTIVE 2014/34/EU (ATEX) FOR EXPLOSIVE ATMOSPHERES"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/manufacture-weapons-ammunition/product/precision-percussion-primer-assembly.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "ad5f0debeeef88ffacabeb23e5a6831f72fe9cbca42bc1ed05dd7743f0540403"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Precision Percussion Primer Assembly

## 1. Technical Definition
Miniature explosive ignition component for ammunition cartridges.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **15-35 MPa (2175-5075 psi) detonation pressure range**. Failure boundary: **Detonation pressure below 12 MPa (1740 psi) or above 40 MPa (5800 psi)**, Mechanism: **Insufficient shockwave propagation below 12 MPa fails to ignite propellant; above 40 MPa, structural yield strength of 7075-T6 aluminum (503 MPa) is exceeded, causing casing rupture**.

### 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 |
| :--- | :--- | :--- | :--- |
| Lead styphnate crystal degradation at 85°C for 1000 hours | 8 | Delayed ignition timing exceeding 2.0 ms specification | Stabilized lead azide formulation with 0.5% carboxymethylcellulose binder |
| Anvil cup deformation exceeding 0.05 mm at 25 kN impact force | 8 | Inconsistent primer sensitivity with &gt;15% coefficient of variation | Hardened 4140 steel anvil with 50 HRC minimum hardness and 0.02 mm flatness tolerance |

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

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

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Primer Mixing and Blending System**, **Primer Cup Forming Press**, **Automated Primer Assembly and Inspection Line**  
**Downstream Applications**: Small Arms Ammunition Cartridges, Artillery Shells, Mortar Rounds  

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

### Q: What are the key components in a precision percussion primer assembly?
**A**: The assembly consists of four main components: an anvil, foil disc, primary explosive (typically lead styphnate), and primer cup made from copper alloy.

### Q: What is the typical shelf life of percussion primer assemblies?
**A**: Properly stored percussion primer assemblies typically have a shelf life of 10-15 years, though this can vary based on environmental conditions and specific manufacturing specifications.

### Q: How does the sensitivity threshold affect primer performance?
**A**: The sensitivity threshold (measured in Newtons) determines the impact force required for reliable ignition. Proper sensitivity ensures consistent firing while maintaining safety during handling and storage.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- CE MARKING - DIRECTIVE 2014/34/EU (ATEX) FOR EXPLOSIVE ATMOSPHERES

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

### 🌐 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_ASSEMBLY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 1c7494bc
