--- type: "product_component" 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" llms_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/component/cup-body.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:CUP_BODY" urn: "URN:CNFX:ME:UNIT:CUP_BODY" interface_type: "physical-logic-coupled" is_migrated_part: true anvil: type: "component" llms_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/component/anvil.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:ANVIL" urn: "URN:CNFX:ME:UNIT:ANVIL" interface_type: "physical-logic-coupled" is_migrated_part: true explosive-compound: type: "component" llms_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/component/explosive-compound.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:EXPLOSIVE_COMPOUND" urn: "URN:CNFX:ME:UNIT:EXPLOSIVE_COMPOUND" interface_type: "physical-logic-coupled" is_migrated_part: true sealant: type: "component" llms_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/component/sealant.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:SEALANT" urn: "URN:CNFX:ME:UNIT:SEALANT" interface_type: "physical-logic-coupled" is_migrated_part: true 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: "5e22d087e76d36586955716ee09329f2aa174fe455eb2def9eb7c7d6c257aadc" royalty_logic: "IPFS-CID-REQUIRED" mint_status: "logic-verified-ready" rag_vector_index: semantic_queries: - "Precision Percussion Primer Cup" - "precision percussion primer cup specifications" - "copper alloy primer cup for ammunition" - "percussion primer cup BOM components" - "ammunition primer cup material hardness" - "nickel-plated steel primer cup dimensions" - "Precision Percussion Primer Cup in " - "China Precision Percussion Primer Cup manufacturer" - "Precision Percussion Primer Cup supplier China" - "Precision Percussion Primer Cup primary_spec" - "Precision Percussion Primer Cup secondary_spec" version: "3.3.5-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