SMD-EIC-RD2003_A_Draft_110822.pdf

The only official copy of this file is the one on-line on the Superconducting Magnet Division website. Before using a printed copy, verify that it is the most current version by checking the document issue date on the website.

Magnet Division Specification

Specification Number: SMD-EIC-RD2003

Revision: A Draft 11/8/22

Procurement Specification, Barrier Grade Niobium Sheet for EIC Interaction Region Magnet Rutherford Cable

▫ Prepared By:

Henry M. Hocker, Jr.

▫ Approved By:

M. Anerella - Cognizant Engineer

R. Gupta – Cognizant Scientist

H. Witte – L4, EIC Magnet R&D

Q. Wu – L3, EIC Magnet R&D

M. Blaskiewicz – L2, EIC Magnet R&D

H. Hocker – Quality Assurance Representative, Magnet Division

Revision History Rev A: Draft 11/8/22

Superconducting Magnet Division

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SMD-EIC-RD2003 A Draft 11/8/22

1. Scope:

This specification establishes the minimum requirements for unalloyed, barrier grade Niobium Sheet. This material will be used in the manufacture of superconducting wire for use in the Relativistic Heavy Ion Collider.

1.1 Definition:

Lot: A lot is defined as all material of a single size, process and casting, heat treated in a single charge in a batch-type furnace.

2. Applicable Documents:

2.1 Applicability:

The following documents of the issue in effect on date of invitation for bids or request for bids or request for proposal, form a part of the specification to the extent specified herein.

2.2.1 Government Documents

MIL-I-45208; Inspection System Requirements

2.1.2 Non-Government Documents

a) ASTM B-393; Standard Specification for Niobium and Niobium Alloy

Strip, Sheet, Foil and Plate.

b) ASTM E-112; Standard methods for determining the average grain size.

c) ASTM E-8; Methods of tension testing of metallic materials.

d) ASTM E 10-84 Standard Test Method for Brinell Hardness of Metallic Materials.

2.2 Precedence:

In the event of conflict between the requirements of this specification and the above applicable documents, this specification shall take precedence. Any such conflict shall be brought to the attention of the Buyer.

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SMD-EIC-RD2003 A Draft 11/8/22

3. Requirements:

The niobium sheet is to be produced to ASTM B-393 (Reactor Grade I) with additional and overriding requirements as specified herein.

3.1 Chemical Requirements:

3.1.1 The ingot to be converted to sheet shall conform to the requirements given below for chemical composition. Methods for determining composition shall be either Inert Gas Analysis or Plasma Spectrometry.

Niobium (by difference) 99.82% minimum

% by Weight Maximum

Oxygen 0.015 Nitrogen 0.010 Carbon 0.010 Hydrogen 0.001 Tantalum 0.100 Titanium 0.004 Iron 0.005 Silicon 0.005 Molybdenum 0.005 Tungsten 0.030

3.1.2 In addition, each heat of Niobium sheet (final product) shall conform to the requirements given below for dissolved interstitials. The method for determining composition shall be Inert Gas Analysis.

% by Weight Maximum

Oxygen 0.020 Nitrogen 0.010 Carbon 0.010 Hydrogen 0.002

3.2 Mechanical Requirements:

Yield Strength (0.2% offset) - 10,000 psi minimum

Elongation (1 in. gauge length) - 25% minimum

3.3 Metallurgical Requirements:

Material shall be at least 90% recrystallized and exhibit an average grain size of ASTM #4 or finer, with no grains larger than ASTM #3. See ASTM E-112.

3.4 Ingot Hardness: (Requirement removed)

4. Quality Assurance:

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The seller shall maintain a quality assurance program in general accordance with MIL-I-45208 to insure that each item offered for acceptance or approval conforms to the requirements herein.

4.1 Documentation:

4.1.1 The seller shall maintain records of all inspections and tests. In addition, the following test data shall be submitted to the Buyer:

a. Ingot analysis; specific values by Inert Gas Analysis or Plasma

Spectrometry (para. 3.1.1).

b. Product analysis; compliance with the specified values by

Inert Gas Analysis (para. 3.1.2).

c. Mechanical properties; specific values (para. 3.2).

d. Grain size; specific values reported in accordance with

ASTM E 112, Section 15.5 (para. 3.3).

e. Ingot hardness; compliance with the specification (para. 3.4).

4.2 Tests:

The tests required herein are the minimum required and are not intended to supplant any controls, examination, inspections, or tests normally employed by the seller to assure the quality of the product.

4.2.1 Chemistry

a. Impurity levels on ingot and sheet. By Inert Gas Analysis or Plasma Spectrometry.

4.2.2 Mechanical, in accordance with ASTM E-8

a. Yield strength

b. Elongation

4.2.3 Grain size, in accordance with ASTM E-112, Section 3.1.3. (Alternative proposals to the Intercept Procedure will be considered).

4.2.4 Ingot Hardness

a. Brinell Hardness number.

5. Preparation for Shipment:

5.1 Packaging:

The packaging procedure shall be proposed by the vendor and agreed upon | by Buyer.

5.2 Marking for Shipment:

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If the purchase is made directly by BNL, each crate shall be legibly and conspicuously marked with the following information:

| "Barrier Grade Niobium Sheet" | | Specification No. SMD-EIC-RD2003 Rev. XXX | | BNL P.O. Number | | Name of Material | | Ingot No. | | Lot No. | | Dimensions | | Date of Manufacture | | Name of Manufacturer |

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Procurement Specification, Barrier Grade Niobium Sheet for EIC Interaction Region Magnet Rutherford Cable