Industry procurement solution · Reviewed 10 August 2026
Metals for Hydrogen Systems
Hydrogen-service procurement requires a documented compatibility and integrity basis for pressure, gas purity, cycling, temperature, welds, leakage and inspection. Material selection cannot rely on conventional gas-service assumptions alone.
Answer first
There is no single metal specification for an entire project
Divide the project into systems, document each service environment and governing code, then select compatible materials, product standards, fabrication routes, protection systems and inspection plans.
High-pressure gas, pressure cycling and leak-sensitive connections
Hydrogen-material interaction, embrittlement and fatigue concerns
Outdoor, process and mixed-metal installations
System map
Material and product selection by project system
| System | Selection drivers and alternatives | Reviewed starting points |
|---|---|---|
| Hydrogen piping and fittings |
| Stainless pipeCarbon steel pipe |
| Storage and pressure equipment |
| Stainless sheetCarbon steel plate |
| Compression and skid structures |
| Carbon steel plateGalvanized coil |
| Welding and integrity management |
| Stainless pipeCarbon steel pipe |
Project control
Standards, certification and documents
- Hydrogen design basis: pressure, purity, cycling, temperature and leak criteria
- Materials compatibility assessment and piping/equipment classes
- Welding, examination, pressure/leak test and inspection procedures
- Certificates, PMI, traceability and turnover records
Fabrication and logistics
Package interfaces to control
- Fabrication drawings, welding, heat treatment, coating and repair procedures
- Inspection hold points, testing methods, acceptance criteria and document approval
- Identification through cutting and assembly, preservation, packing and consolidated shipping
- Destination rules, site storage, installation interfaces and delivery sequence
Risk register
Common procurement risks
Assuming higher strength alone improves hydrogen-service suitability
Ignoring pressure cycling and weld susceptibility
Using mixed materials without leak, galvanic and sealing review
Treating generic MTCs as a compatibility assessment
Comparable offers
Structured RFQ checklist
Project location, governing code, service environment and design life
System duty, material/product standard, grade and delivery condition
Dimensions, tolerances, quantity, fabrication and welding requirements
Inspection plan, test documents, marking, traceability and delivery destination
Packing, preservation, shipping terms and required delivery date
Evidence
Sources and review
Project engineering documents and current governing standards supersede this general selection map.
Project sourcing from China
Build a traceable Hydrogen systems supply package
Share the design basis, system list, specifications, quantities, inspection plan, destination and delivery schedule.