304L Cryogenic Vessel Castings
304L Cryogenic Vessel Castings
Product Overview
Manufactured from ultra-low carbon ZG03Cr19Ni10 (CF-3) stainless steel, our 304L castings are engineered for LNG/liquid nitrogen applications with operational temperatures down to -196℃.
Key Features
✔ Cryogenic Performance
Impact toughness: ≥100J @-196℃
CTE: 16.5×10⁻⁶/℃ (20℃~-196℃)
No ductile-brittle transition
✔ Material Purity
C≤0.03% (extra-low carbon)
Gas content: [O]≤30ppm, [H]≤2ppm
δ-Ferrite ≤3% (Schaeffler diagram)
Product Series
▸ LNG tank inner vessels
▸ Liquid nitrogen pipeline flanges
▸ Air separation valve bodies
▸ Superconducting equipment supports
Technical Data
|
Parameter |
Value |
Standard |
|
Tensile |
≥485MPa |
ASTM A351 |
|
Impact @-196℃ |
≥100J |
ASTM A370 |
|
Hardness |
HB≤187 |
ASTM E10 |
|
Permeability |
≤1.02 |
ASTM A342 |
Special Processes
Vacuum induction melting
Hot isostatic pressing
Cryogenic stabilization
Quality Assurance
Material Tests:
✓ OES (C/N control)
✓ Full-size impact test @-196℃
Product Tests:
✓ 100% RT (EN 12517-2 Cl.1)
✓ Helium leak test
Certifications
✓ ASME Section VIII Div.1
✓ EN 10204 3.2
✓ PED 2014/68/EU
✓ NACE MR0175
Note:
All castings are cryo-tested
Material traceability guaranteed
Non-destructive testing reports
Technical support available
FAQ
Q: What is your rejection rate?
Q: How often is your equipment calibrated?
Q: Do you conduct third-party testing?
Q: How do you monitor production consistency?
Q: Can I visit during testing and inspection?
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