CE Certification ASTM B407-21 Standard Specification for Nickel-Iron-Chromium Alloy Seamless Pipe and Tube Manufacturers, Factories

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CE Certification ASTM B407-21 Standard Specification for Nickel-Iron-Chromium Alloy Seamless Pipe and Tube Manufacturers, Factories

Scope Â
- Covers seamless pipe and tube made of nickel-iron-chromium alloys (UNS N08120, N08800, N08810, N08811, N08890, N08140). Â
- Designed for high-temperature and corrosive service (e.g., heat exchangers, furnace components, chemical processing).

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Product Description

Ordering Information

Buyers must specify:

ASTM B407-21 and alloy UNS number (e.g., N08800).

Dimensions (OD, wall thickness, length).

Condition (hot-finished, cold-worked, annealed).

Surface finish (e.g., pickled, polished).

Testing requirements (hydrostatic, NDE, corrosion tests).

Certification (EN 10204 3.1/3.2 or equivalent).

Additional requirements (e.g., grain size, special tolerances).

Material Codes (UNS Alloys)

UNS Alloy Designations in ASTM B407-21

N08120

Common Name: None (proprietary alloy)

Key Features: High chromium (25%) and nickel (37%) with niobium (Nb) addition for sulfidation resistance.

N08800

Common Name: Incoloy® 800

Key Features: General-purpose alloy with balanced Ni-Fe-Cr composition for oxidation resistance.

N08810

Common Name: Incoloy® 800H

Key Features: Higher carbon (0.05–0.10%) than N08800 for improved high-temperature strength.

N08811

Common Name: Incoloy® 800HT

Key Features: Controlled Ti/Al (≥0.85%) for superior creep rupture strength.

N08890

Common Name: Incoloy® 800AT

Key Features: Low titanium (Ti ≤ 0.03%) for enhanced weldability.

N08140

Common Name: None (specialized alloy)

Key Features: Modified Ni-Fe-Cr with improved corrosion resistance in aggressive environments.

Notes:
- N08800, N08810, and N08811 are the most widely used grades, especially in high-temperature applications.
- N08120 and N08140 are niche alloys for extreme corrosion resistance.

Chemical Composition

Strict elemental limits (e.g., N08800: Ni 30–35%, Cr 19–23%, Fe ≥ 39.5%).

Impurity control: Low sulfur (≤0.015%) and phosphorus (≤0.025%).

Mechanical Properties

Alloy	Condition	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)
N08800	Annealed	≥485	≥170	≥30
N08810	Annealed	≥450	≥170	≥30
N08811	Annealed	≥450	≥170	≥30

Heat Treatment

Solution Annealing: Mandatory for all alloys (e.g., N08800 at 1100–1200°C, rapid cooling).

Stress Relieving: Optional for cold-worked tubes.

Inspection & Testing Requirements

Chemical Analysis: Per ASTM E354 (wet) or E1473 (OES).

Tensile Testing: Per ASTM E8/E8M (one test per lot).

Hydrostatic Testing: Optional (per ASTM B829).

NDE: Eddy current (ASTM E426) or ultrasonic (ASTM E213) if specified.

Corrosion Testing: Optional (e.g., ASTM G28 for intergranular corrosion).

ASTM-B407-21 Nickel-Iron-Chromium Alloy Seamless Pipe 1

ASTM-B407-21 Nickel-Iron-Chromium Alloy Seamless Pipe 2

ASTM-B407-21 Nickel-Iron-Chromium Alloy Seamless Pipe 3

Surface & Dimensional Requirements

Surface: Free of cracks, scale, or pits; minor scratches allowed.

Tolerances:

- OD: ±0.8% for hot-finished, ±0.4% for cold-worked.
- Wall Thickness: ±10% for pipes, ±5% for tubes.

Certification & Marking

MTR (Material Test Report): Includes heat analysis, mechanical tests, and compliance.

Marking: Alloy UNS (e.g., "N08800"), ASTM B407-21, heat number, size, and manufacturer’s logo.

Key Applications

Heat exchangers, boilers, furnace tubing (N08800/N08810).

Chemical processing (N08120 for sulfuric acid environments).

Nuclear/power plants (N08811 for creep resistance).

Nickel-Iron-Chromium Alloy Product Description

Frequently Asked Questions

What is the standard ASTM B407-21?

ASTM B407-21 is the standard specification for Nickel-Iron-Chromium alloy seamless pipe and tube, covering materials like N08800 and N08810 for high-temperature and corrosive services.

Which alloys are included in this specification?

The main alloys include UNS N08120, N08800 (Incoloy 800), N08810 (800H), N08811 (800HT), N08890, and N08140.

What are the mechanical properties of N08800?

In the annealed condition, N08800 typically exhibits a minimum tensile strength of 485 MPa, a yield strength of 170 MPa, and an elongation of at least 30%.

Is hydrostatic testing mandatory for these pipes?

Hydrostatic testing is generally optional per ASTM B829, though it can be performed if specified in the purchase order.

What are the common applications for Incoloy 800H/HT?

These alloys are primarily used in high-temperature environments such as furnace tubing, heat exchangers, and chemical processing equipment due to their superior creep rupture strength.

What type of certification should I expect?

A Material Test Report (MTR) including heat analysis and mechanical test results is standard, often complying with EN 10204 3.1 or 3.2.

Product Detail

CE Certification ASTM B407-21 Standard Specification for Nickel-Iron-Chromium Alloy Seamless Pipe and Tube Manufacturers, Factories

Product Description

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Product Detail

CE Certification ASTM B407-21 Standard Specification for Nickel-Iron-Chromium Alloy Seamless Pipe and Tube Manufacturers, Factories

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