Alloy 333,RA-33 Other/Similar Specs,UNS N06333,E FORU

British Specs:，American Specs: AMS 5717 Bar and Forgings AMS 5593 Sheet, Strip and Plate，German Specs:

**Technical Datasheet: Alloy 333 / RA-333® (UNS N06333) - Other Specifications & Similar Alloys** --- ### **Overview** Alloy 333 (UNS N06333), commercially known as **RA-333®**, is a nickel-chromium-iron superalloy with strategic additions of molybdenum, tungsten, and cobalt. This datasheet covers additional specifications, comparable grades, and supplementary technical information for comprehensive material selection in high-temperature applications up to **1200°C (2200°F)**. --- ### **Chemical Composition Comparison (Weight %)** | Element | Alloy 333 | Inconel 601 | RA 330 | Haynes 556 | |---------|------------|-------------|---------|-------------| | Nickel (Ni) | 44-48 | 58-63 | 34-37 | 19-23 | | Chromium (Cr) | 24-27 | 21-25 | 18-20 | 21-23 | | Iron (Fe) | 15-20 | ≤20 | Balance | Balance | | Molybdenum (Mo) | 2.5-4.0 | - | - | 2.5-3.5 | | Tungsten (W) | 2.0-4.0 | - | - | 2.0-3.0 | | Cobalt (Co) | 2.0-4.0 | - | - | 17-21 | | Aluminum (Al) | ≤0.5 | 1.0-1.7 | - | 0.10-0.50 | | Silicon (Si) | 0.5-1.0 | ≤0.50 | 1.0-2.0 | 0.20-0.80 | --- ### **Physical Properties Comparison** | Property | Alloy 333 | Inconel 601 | RA 330 | Haynes 556 | |----------|------------|-------------|---------|-------------| | Density (g/cm³) | 8.57 | 8.11 | 8.00 | 8.23 | | Melting Point (°C) | 1370-1425 | 1360-1410 | 1370-1425 | 1320-1390 | | Thermal Conductivity (W/m·K) | 12.5 | 11.2 | 12.5 | 11.5 | | Thermal Expansion (μm/m·°C) | 14.2 | 13.5 | 15.8 | 14.8 | | Modulus of Elasticity (GPa) | 211 | 214 | 196 | 201 | --- ### **Mechanical Properties Comparison** **Room Temperature (Annealed):** | Property | Alloy 333 | Inconel 601 | RA 330 | Haynes 556 | |----------|------------|-------------|---------|-------------| | Tensile Strength (MPa) | 690-760 | 655 | 620 | 760 | | Yield Strength (MPa) | 310-380 | 275 | 295 | 380 | | Elongation (%) | 40-50 | 45 | 40 | 45 | **815°C (1500°F) Properties:** | Property | Alloy 333 | Inconel 601 | RA 330 | Haynes 556 | |----------|------------|-------------|---------|-------------| | Tensile Strength (MPa) | 275 | 110 | 120 | 240 | | Yield Strength (MPa) | 205 | 85 | 85 | 170 | --- ### **Alternative & Similar Alloys** **Inconel 601 (UNS N06601):** - Better oxidation resistance at very high temperatures - Higher nickel content for improved carburization resistance - Lower strength at intermediate temperatures - Excellent thermal fatigue resistance **RA 330 (UNS N08330):** - Lower cost alternative - Good carburization resistance - Lower high-temperature strength - Excellent thermal stability **Haynes 556 (UNS R30556):** - Superior thermal fatigue resistance - Better strength retention at high temperatures - Higher cobalt content increases cost - Excellent oxidation resistance **Incoloy 800H (UNS N08810):** - Lower nickel content - Good strength and oxidation resistance - Lower cost for less severe applications - Good carburization resistance --- ### **Special Applications & Considerations** **Unique Advantages of Alloy 333:** - Balanced composition for multiple corrosion resistances - Excellent for cyclic oxidation conditions - Good resistance to carburizing and oxidizing atmospheres - Maintains strength over wide temperature range - Cost-effective for severe service conditions **Limitation Considerations:** - Not recommended for strongly reducing acids - Lower strength than some cobalt-based alloys - Limited availability in some product forms - Higher cost than standard stainless steels --- ### **Specialized Specifications** **Nuclear Applications:** - ASME Section III qualified - Nuclear grade certifications available - Radiation resistance documentation **Aerospace Specifications:** - AMS 5718: Bars, forgings, and rings - AMS 5872: Sheet, strip, and plate - Special testing for aircraft applications **Oil & Gas Standards:** - NACE MR0175/ISO 15156 compliance - API 6A for wellhead applications - Sour service certifications --- ### **International Standards Cross-Reference** | Standard Type | Alloy 333 | Similar Specifications | |---------------|------------|------------------------| | **ASTM** | B435 (Plate) | B168 (RA 330) | | **ASTM** | B572 (Rod) | B166 (Inconel 601) | | **ASME** | SB-435 | SB-168 | | **ASME** | SB-572 | SB-166 | | **UNS** | N06333 | N06601, N08330 | | **DIN** | 2.4608 | 2.4851, 1.4865 | | **EN** | NiCr23Fe | NiCr23Fe, X8NiCrAlTi32-21 | --- ### **Technical Notes** **Heat Treatment Sensitivity:** - Critical control of solution annealing temperature - Rapid cooling essential for optimal properties - Stress relief procedures for complex components - Double annealing for severe applications **Fabrication Considerations:** - Cold working enhances strength but reduces ductility - Welding requires proper filler metal selection - Machining characteristics vary with heat treatment - Surface treatments available for special applications --- ### **Quality & Certification Standards** **Testing Standards:** - ASTM E8: Tension Testing - ASTM E21: Elevated Temperature Tension Tests - ASTM E139: Creep and Stress Rupture Testing - ASTM E112: Grain Size Determination **Certification Requirements:** - Mill Test Certificates per EN 10204 3.1/3.2 - NACE MR0175/ISO 15156 compliance - ASME Nuclear Certifications - NADCAP accredited testing available --- ### **Key Selection Criteria** **Choose Alloy 333 when:** - Multiple corrosion mechanisms are present - Cyclic thermal conditions exist - Both oxidizing and carburizing atmospheres present - Good fabricability is required - Cost-performance balance is critical **Consider alternatives when:** - Very high temperatures (>1150°C) are continuous - Extreme carburizing conditions exist - Cost is primary driver - Specialized properties are required --- **Notes:** - "RA-333" is a registered trademark of Rolled Alloys - All comparative data represents typical values - Consult technical experts for specific application requirements - Properties may vary with processing and heat treatment *For comprehensive technical support and material selection assistance, consult with qualified materials engineering specialists.*

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 2921 gallon liquid totes Special package is available on request.