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Gr 660A Flange Stud, ASTM A453, M80, 30 to 1000 mm, Grade A
Gr 660A Flange Stud, ASTM A453, M80, 30 to 1000 mm, Grade A
Gr 660A Flange Stud, ASTM A453, M80, 30 to 1000 mm, Grade A
Gr 660A Flange Stud, ASTM A453, M80, 30 to 1000 mm, Grade A

Gr 660A Flange Stud

QS Fastener: Gr 660A Flange Stud
Name: Gr 660A Flange Stud
Standard: ASTM
Material: A453 Gr 660A
Size: M80
Product Grade: A
Tensile Strength(Rm): 895 N/mm²
Elongation: 25%
Feature: Excellent Corrosion Resistance
Application: For Oil Pipeline Flange
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1. Material Preparation
1.1 Material Procurement
Procure high-quality nickel-based alloy raw materials that comply with ASTM A453 Gr. 660 standards and are suitable for manufacturing Gr 660A Flange Studs. This standard specifies the chemical composition and mechanical performance requirements for nickel-based alloys.
 
1.2 Material Inspection
Conduct chemical composition analysis and mechanical performance testing on the procured raw materials to ensure compliance with relevant standards, providing a qualified material basis for the production of Gr 660A Flange Studs. Use devices such as spectral analyzers for composition testing.
 
1.2.1 Inspection Standards and Specifications
Chemical composition qualification standards: According to ASTM A453 Gr. 660, the specific requirements for chemical composition (in %) are as follows:
- Nickel (Ni): 24.0% - 27.0%
- Chromium (Cr): 13.5% - 16.0%
- Molybdenum (Mo): 1.0% - 1.5%
- Titanium (Ti): 1.90% - 2.35%
- Aluminum (Al): ≤ 0.35%
- Vanadium (V): 0.10% - 0.50%
- Carbon (C): ≤ 0.08%
- Manganese (Mn): ≤ 2.0%
- Silicon (Si): ≤ 1.0%
- Boron (B): 0.001% - 0.010%
- Phosphorus (P): ≤ 0.040%
- Sulfur (S): ≤ 0.030%
- Iron (Fe): remainder
 
Chemical Composition Analysis
Sample Preparation: At least three representative samples must be taken from each batch of materials for chemical analysis to ensure that they produce Gr 660A Flange Studs that meet the standards.
 
Analysis Equipment: Use spectral analyzers or chemical titration equipment, ensuring that the equipment has been calibrated within the most recent cycle.
 
Qualification Standard: Test results must comply with the chemical composition standards of ASTM A453 Gr. 660, ensuring that the materials are suitable for the manufacturing of Gr 660A Flange Studs.
 
Ensure that testing results conform to the above standards during chemical composition analysis. Evaluating based on these qualification standards can provide a reference for determining material quality and suitability, ensuring successful production of high-performance Gr 660A Flange Studs.
 
1.2.2 Material Source Verification
- Supplier Qualification Review: Ensure that the supplier complies with quality management system standards such as ISO 9001 and review recent evaluation reports to guarantee that materials provided can manufacture Gr 660A Flange Studs that meet ASTM A453 standards.
 
Certificate of Conformity Requirements: Each batch of materials must be accompanied by a certificate of conformity and inspection proof provided by the supplier to ensure compliance with ASTM A453 standards.
 

Xiamen Qishine Imp.&Exp. Co.,Ltd.

PRODUCT QUALITY CERTIFICATE

CUSTOMER：

Contract No：5330

Serial No：13(8）                                                                                                        DATE：2022-12-19

1.  Gr 660A Flange Stud DESCRIPTION                                                                                                                               

DESIGNATION：Gr 660A Flange Stud

MATERIAL GRADE: A453 Gr.660 Cl.A

MATERIAL MARK：660A 

STANDARD：ISO 261-1998

SPECIFIATIONS：ASTM A453/A453M-2017

HEAT NO：222A-0954

Specs

M80*775

PO. Item

13#

Qty/PCS

20

2. Gr 660A Flange Stud CHEMICAL COMPOSITION

elements

CSiMnPSCrNiMoAlTiBV

norm values

≤0.08

≤1.00

≤2.00

≤0.040

≤0.030

13.5-16.0

24-27

1.0-1.5

≤0.35

1.9-2.350.001-0.0100.1-0.5

Actual

0.0432

0.597

1.32

0.0154

0.0012

14.1

25.4

1.15

0.198

2.30

0.0018

0.235

3. Gr 660A Flange Stud MECHANICAL PROPERTY    

INSPECT. ITEM

Tensile Strength    (Mpa)

Yield Strength  (Mpa)

Elongation %

Reduction %

-196℃

impact test

    J

Hardness  HB

Spec

≥895

≥585

≥15%

≥18%

-

HB248-341

Actual

960

690

25.5

29

62.14  65.34  64.25

302

4.Gr 660A Flange Stud HEAT TREATMENT

METHOD：                                                                          970℃                                                     720℃

Solid solution + Prescription                                          Solid solution                                            Prescription

MEDIUM：water                                                                                                                                               

5. SURFACE & CLASS

THREAD CLASS：6g

DIMENSIONAL AND SURFACE INSPECTION：OK

APPEARANCE  TREATMENT:  Color

Testconclusions

After Inspection , The quality of this product get the ISO 261-1998、ASTM A453/A453M-2017 standard of the pattern and the industry standard.

THE ABOVE MATERIAL IS MANUFACTURED IN ACCORDANCE WITH SPECIFIED SPECIFICATION AND IS SUBJECT TO RANDOM TEST AND INSPECTION.THE CERTIFICATE IS PREPRARED BASED ON THE TEST RESULTS WHICH ARE OBTAINED UNDER THE SUPERVISION BY THE INSPECTOR.THE INSPECTOR IS INDEPENDENT OF THE MANUFACTURER.

Inspectors：Jin Biao                                 Inspect Engineers： Yang Mingming                                                                                        Quality inspection seal

 
 
 
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