Features

ASTM B408 Nickel Alloy Rod and Bar

Chemical Composition (wt.%)

Element	Alloy N08120	Alloy N08800	Alloy N08810	Alloy N08811	Alloy N08890
Nickel	35.0 – 39.0%	30.0 – 35.0%	30.0 – 35.0%	30.0 – 35.0%	40.0 – 45.0%
Chromium	23.0 – 27.0%	19.0 – 23.0%	19.0 – 23.0%	19.0 – 23.0%	23.5 – 28.5%
Iron	Remainder	39.5% min	39.5% min	39.5% min	Remainder
Manganese	1.5% max	1.5% max	1.5% max	1.5% max	1.5% max
Carbon	0.02 – 0.10%	0.10% max	0.05 – 0.10%	0.06 – 0.10%	0.06 – 0.14%
Copper	0.50% max	0.75% max	0.75% max	0.75% max	0.75% max
Silicon	1.0% max	1.0% max	1.0% max	1.0% max	1.0 – 2.0%
Sulfur	0.03% max	0.015% max	0.015% max	0.015% max	0.015% max
Aluminum	0.40% max	0.15 – 0.60%	0.15 – 0.60%	0.25 – 0.60%	0.05 – 0.60%
Titanium	0.20% max	0.15 – 0.60%	0.15 – 0.60%	0.25 – 0.60%	0.15 – 0.60%
Molybdenum	2.50% max	—	—	—	1.0 – 2.0%
Niobium	0.4 – 0.9%	—	—	—	0.2 – 1.0%
Tantalum	—	—	—	—	0.10 – 0.60%
Phosphorus	0.040% max	0.045% max	0.045% max	0.045% max	—
Tungsten	2.50% max	—	—	—	—
Cobalt	3.0% max	—	—	—	—
Nitrogen	0.15 – 0.30%	—	—	—	—
Boron	0.010% max	—	—	—	—

Mechanical Properties

Alloy Condition	Tensile Strength (psi)	Yield Strength (0.2% offset, psi)	Elongation (%)
UNS N08120 Cold-worked and annealed	90,000	40,000	30
UNS N08800 Hot-worked, as-hot-worked	80,000	35,000	25
UNS N08800 Cold-worked and annealed	75,000	30,000	30
UNS N08810 and UNS N08811 Cold-worked and annealed	65,000	25,000	30
UNS N08890 Cold-worked and annealed	75,000	30,000	35

Technical Specifications

Specification	Value
Standard	ASTM B408 Nickel Alloy Rod and Bar
Grade	UNS N08120, UNS N08800, UNS N08810, UNS N08811, and UNS N08890
Other Standards	ASTM B408 & ASME SB408 (Rod & Bar), ISO 9723 (Rod & Bar), BS 3076NA15 (Rod & Bar), DIN 17460 (Rod & Bar), EN 10095 (Rod & Bar)
Type of Bars	Hot-worked and Cold-worked
Shape of Bars	Round, Square, Hexagonal, or Rectangular solid section
Density	8.89g/cm³
Dimension	Rod Dia: 6 – 300mm x Length 1000 – 6000mm Bar Size: Width≤254mm x Thickness≥3.2mm
Inspection Certificate	EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection)
Tests	Chemical analysis, Tensile test, Grain size test, Intergranular corrosion test, Flatness %=(H/L) x 100, Metallographic examination

Packing

Small diameter packed in plywood box; large diameter packed on plywood pallets.

Application

UNS N08120: This alloy is primarily used in high-temperature environments due to its resistance to oxidation and other forms of high-temperature corrosion. Typical applications include furnace parts and equipment, petrochemical furnace cracker tubes, pigtails, and headers in refineries.

UNS N08800 (Alloy 800): This nickel-iron-chromium alloy is known for its stability and resistance to oxidation and carburization in high-temperature environments. It is used in heat exchangers, furnace components, and chemical and petrochemical processing.

UNS N08810 (Alloy 800H): This is a high-carbon version of Alloy 800, designed for enhanced creep resistance. It’s suitable for parts that require high strength at temperatures up to 1200°F (649°C), such as industrial furnaces, heat-treating equipment, and pressure vessels.

UNS N08811 (Alloy 800HT): Similar to Alloy 800H but with further enhancements to improve creep resistance. This alloy finds applications in environments where temperatures exceed 1100°F (593°C), particularly in the petrochemical, thermal processing, and power industries.

UNS N08890: This material is known for its superior resistance to oxidation and other high-temperature corrosion mechanisms. It’s typically used in high-temperature industrial furnace applications and other settings where the environment is particularly aggressive.