Table of Contents
- Hastelloy C276 Overview
- Technical Specifications
- Chemical Composition & Mechanical Properties
- Types of ASTM B574 UNS N10276 Square Bars
- Key Advantages of Hastelloy C276 Square Bar
- Key Applications of Hastelloy C276 Square Bar
- Quality Assurance & Inspection
- Global Export Markets
- Frequently Asked Questions
- Contact Aurum Overseas
Hastelloy C276 Overview
Aurum Overseas is a premier Hastelloy C276 Square Bars Supplier offering high-performance nickel-molybdenum-chromium alloy profiles for severe corrosive environments. Engineered with high molybdenum and chromium content, our stock of ASTM B574 UNS N10276 Square Bars resists pitting, crevice corrosion, and stress cracking in aggressive acids.
As a trusted Hastelloy C276 Square Bars Exporter, we deliver tight-tolerance ASTM B574 UNS N10276 Bright Square Bars for precision CNC machining and heavy-duty ASTM B574 UNS N10276 Forged Square Bars for structural plant equipment. Every order features EN 10204 3.1 mill certification, heat traceability, and custom cut-to-length sizing.
We supply certified ASTM B574 UNS N10276 Square Bars to chemical, oil and gas, pollution control, and marine sectors across the USA, Canada, Germany, UK, UAE, Saudi Arabia, and worldwide markets.
Technical Specifications
| Technical Parameter | Specification Standard |
|---|---|
| Material Specifications | ASTM B574, ASME SB574, AMS 5750, DIN 17752, ISO 9723 |
| UNS Designation | UNS N10276 |
| Size Range (Square) | 6.0 mm x 6.0 mm to 200 mm x 200 mm (1/4" to 8" square) |
| Length Options | 1,000 mm to 6,000 mm, Custom Precision Cut-to-Length |
| Surface Finishes | Cold Drawn, Centerless Ground, Bright Annealed, Hot Forged, Rough Turned |
| Condition | Solution Annealed (1150 °C / 2100 °F followed by rapid water quench) |
| Dimensional Tolerances | ASTM B574 h9, h10, h11 square profile tolerances |
Chemical Composition & Mechanical Properties
Equivalent Standards
| Country / Standard | Standard Code | Grade Value |
|---|---|---|
| America (ASTM) | ASTM B574 | UNS N10276 |
| Australia (ASME) | ASME SB574 | UNS N10276 |
| Europe (EN) | EN Standard | NiMo16Cr15W |
| Germany (DIN / WNR) | DIN / WNR | 2.4819 |
| Japan (JIS) | JIS | NW 0276 |
| Russia (GOST) | GOST | XH65MBU |
| United States (AMS) | AMS | 5750 |
Chemical Composition (%)
| Element | Composition Range (%) |
|---|---|
| Nickel (Ni) | 50.99 min* |
| Chromium (Cr) | 14.50 – 16.50 |
| Molybdenum (Mo) | 15.00 – 17.00 |
| Iron (Fe) | 4.00 – 7.00 |
| Tungsten (W) | 3.00 – 4.50 |
| Cobalt (Co) | 2.50 max |
| Manganese (Mn) | 1.00 max |
| Vanadium (V) | 0.35 max |
| Silicon (Si) | 0.08 max |
| Phosphorus (P) | 0.04 max |
| Sulfur (S) | 0.03 max |
| Carbon (C) | 0.010 max |
Mechanical & Physical Properties
| Property Parameter | Metric Units | Imperial Units |
|---|---|---|
| Density | 8.89 g/cm³ | 0.321 lb/in³ |
| Melting Point | 1325 – 1370 °C | 2415 – 2500 °F |
| Tensile Strength (Min) | 690 MPa | 100,000 Psi |
| Yield Strength (0.2% Offset, Min) | 283 MPa | 41,000 Psi |
| Elongation (Min) | 40 % | 40 % |
Types of ASTM B574 UNS N10276 Square Bars
Aurum Overseas supplies Hastelloy C276 (UNS N10276) square bars in precision bright and heavy forged conditions for severe corrosive chemical environments.
Hastelloy C276 Bright Square Bars
Hastelloy C276 Forged Square Bars
Key Advantages of Hastelloy C276 Square Bar
Outstanding Reducing Acid Resistance
High molybdenum and chromium levels protect components against harsh hydrochloric, sulfuric, and phosphoric acids.
Resists Severe Pitting & Crevice Attack
Exceptional resistance to localized corrosion in stagnant, high-chloride, and sour gas environments.
Weld-Ready Performance
Ultra-low carbon content minimizes grain-boundary carbide precipitation during welding, maintaining corrosion resistance at joint zones.
High Mechanical Reliability
Maintains toughness and strength across cryogenic temperatures up to elevated operational heat.
Key Applications of Hastelloy C276 Square Bar
| Industry | Applications | Key Benefit |
|---|---|---|
| Chemical Processing | Heat exchanger supports, pump shafts, agitator bars | Prevents rapid acid attack and equipment failure in hot chemical streams. |
| Oil & Gas (Sour Service) | Downhole tool components, valve stems | Resists sulfide stress cracking (H2S) and high-chloride oilfield fluids. |
| Pollution Control | FGD scrubber dampers, ducting supports | Withstands acidic condensates, sulfur dioxide gas, and chloride slurries. |
| Paper & Pulp | Bleach plant washers, chlorination towers | Resists aggressive chlorine dioxide and hypochlorite bleach solutions. |
Quality Assurance & Inspection
Every order fulfilled by an established Hastelloy C276 Square Bars Exporter undergoes rigorous testing protocols to verify structural integrity and mill compliance:
- Chemical Verification: Positive Material Identification (PMI) and optical emission spectroscopy to verify chemical composition per ASTM B574.
- Mechanical Testing: Tensile, yield, and elongation testing to verify compliance with ASTM B574 standards.
- Intergranular Corrosion Testing: ASTM G28 testing to ensure complete resistance to intergranular corrosion attack.
- Ultrasonic Examination: Volumetric non-destructive testing per ASTM A388 on heavy square bar stock to check for internal defects or voids.
Global Export Markets
As an established Hastelloy C276 Square Bars Exporter, Aurum Overseas supplies fully certified ASTM B574 UNS N10276 Square Bars to global chemical processing and energy centers:
USA
Canada
Mexico
Germany
United Kingdom
France
Italy
Netherlands
Belgium
Spain
Poland
UAE
Saudi Arabia
Qatar
Kuwait
Oman
Bahrain
Frequently Asked Questions
It resists H2S stress cracking and chloride pitting, meeting NACE MR0175 standards for oilfield service.
Bright bars offer tight tolerances for lathe machining, while forged bars provide dense grain structures for heavy loads.
No, its ultra-low carbon content prevents weld-zone precipitation, allowing direct use as-welded.
It is one of the few alloys that completely resists wet chlorine gas, hypochlorites, and chlorine dioxide.
All orders include full EN 10204 3.1 Mill Test Certificates covering chemistry, heat numbers, and mechanical results.
Contact Aurum Overseas
Partner with a trusted Hastelloy C276 Square Bars Supplier for certified stock, custom sawing, and fast international dispatch.