ASTM B446 – Nickel-Chromium-Molybdenum-Columbium Rod (Inconel 625)

This page presents the ASTM B446 material specification as manufactured to at Ananka Fasteners Pvt Ltd. B446 covers Inconel 625 (UNS N06625) rod and bar. The chemistry and mechanical properties below are the values delivered to on every fastener released against this specification.

1. Specification Scope

B446 covers Inconel 625 (UNS N06625) rod and bar.

2. Grades Covered by this Specification

The following material grades are supplied by Ananka to ASTM B446:

• Inconel 625

3. Chemical Composition

Composition limits shown are representative for the primary grade governed by this specification. Consult the individual grade datasheet for exact limits.

4. Mechanical Properties

Minimum mechanical properties governing fasteners released to this specification:

5. Available Fastener Types

All standard fastener geometries manufactured at Ananka can be released to ASTM B446:

• Hex Bolt (ASME B18.2.1)
• Heavy Hex Bolt (ASME B18.2.1)
• Hex Bolt Partial Thread (DIN 931)
• Hex Bolt Full Thread (DIN 933)
• Hex Bolt (ISO 4014)
• Hex Bolt Precision (BS 3692)
• Stud Bolt Both Ends (ASME B16.5)
• Threaded Rod / Stud (DIN 976)
• Socket Head Cap Screw (DIN 912 / ASME B18.3)
• Hex Nut (ASME B18.2.2 / DIN 934 / ISO 4032)
• Heavy Hex Nut (ASME B18.2.2)
• Flat Washer (ASME B18.22.1 / DIN 125)

6. Quality Assurance, Testing, and Certification

Every batch released to ASTM B446 is verified by internal and third-party testing.

• Material Test Certificates (MTC): EN 10204 3.1 / 3.2.
• Chemistry: Spectroscopic PMI and independent lab analysis.
• Mechanicals: Tensile, yield, elongation, hardness on every heat.
• NDT: Visual, dimensional, thread gauging, IGC per ASTM A262/G28 where applicable.

For technical documentation and quotations, buyers can also review the Ananka Fasteners manufacturing and supply range or contact the team through the fastener enquiry and technical support page.

7. Standards and Technical References

This datasheet references ASTM B446 for material and fastener requirements. Related dimensional standards commonly paired with this specification include ASME B18.2.1, DIN 931/933, ISO 4014, BS 3692. The applicable standard edition and purchase requirements should be confirmed for every project.

For ASTM International material and fastener specifications, see the ASTM International standards catalogue. This external reference is provided for standards identification; the purchaser should verify the current edition applicable to the order.

8. Frequently Asked Questions

What does ASTM B446 cover?

ASTM B446 chemistry and mechanicals for one or more grades of fastener material. It covers Inconel 625.

Which material grades are covered by ASTM B446?

Ananka Fasteners supplies Inconel 625 to this specification. See Section 2 above for the complete list.

What product forms can be released to ASTM B446?

Bolts / Screws / Studs / Nuts / Washers as manufactured to the geometry standard can be released to ASTM B446, manufactured to the corresponding geometry standard.

What dimensional standards are commonly paired with ASTM B446?

ASTM B446 fasteners are commonly manufactured to ASME B18.2.1, DIN 931/933, ISO 4014, BS 3692, depending on the fastener type required.

Can Ananka Fasteners supply custom fasteners to ASTM B446?

Yes. For a quotation, provide the required fastener type, material grade, nominal size, dimensional standard, quantity and any inspection or certificate requirements.

9. Request a ASTM B446 Quote

Need a fastener released to ASTM B446 for an industrial project? Send the required fastener type, material grade, size, quantity and certification requirements to Ananka Fasteners. Our team can review the requirement and provide technical and commercial information for standard or custom configurations.

Recommended RFQ details: ASTM B446 requirement, material grade, fastener type, nominal size, quantity, inspection requirements and EN 10204 certificate requirements where applicable.