ASTM A193 GRADE B8CLNCuB BOLTS – MTC
ASTM A193 Grade B8CLNCuB & B8CLNCuBA Sample MTC
Access a comprehensive, professionally formatted Material Test Certificate according to EN 10204-2004: 3.1 for ASTM A193 Grade B8CLNCuB and B8CLNCuBA (Low-Carbon, Nitrogen-Strengthened, Cu-B Alloyed 347 / UNS S34752). Inspect the exact documentation your QA and engineering teams will receive with every Ananka Fasteners order.
What's Inside This ASTM A193 B8CLNCuB MTC Certificate
This sample mill test certificate mirrors the rigorous QA documentation package standard for ultra-specialized, multi-alloyed austenitic stainless steel fasteners shipped from Ananka Fasteners Pvt Ltd.
- Full Traceability: Certified with TC No.: S160/26-XX and corresponding ASTM specifications.
- Complex Stabilized Chemistry (UNS S34752): Detailed breakdowns verifying an advanced matrix: Columbium (Niobium) prevents intergranular corrosion; Low Carbon (0.030% max) provides a secondary defense against sensitization; Nitrogen supercharges the yield strength; Copper improves resistance to reducing acids; and a critical trace addition of Boron significantly enhances hot-workability and high-temperature creep resistance.
- Solution Treatment Verification: Confirms the material is carbide solution treated. For B8CLNCuBA (Class 1A), it specifically verifies the treatment occurred in the finished condition, ensuring optimum toughness and a stress-free microstructure after forging or machining.
- Enhanced Yield Strength Properties: Comprehensive reporting of Tensile Strength (Min 550 MPa), an upgraded Yield Strength (Min 240 MPa—significantly higher than standard 347 variants), Elongation (Min 30%), and controlled maximum Hardness.
- Quality Compliance: 100% visual inspection carried out and verified free from defects and radioactive contamination.
Live Preview: ASTM A193 Grade B8CLNCuB & B8CLNCuBA MTC Data
Review the standard parameters and layout before downloading the full document.
TC Number
S160/26-XX
TC Date
12.11.20XX
Material Spec
ASTM A193 Grade B8CLNCuBA Class 1A UNS S34752
Bar Shape / Size
Hex Bolt / M24
Dimensions / Item
Heavy Hex Bolt M24-3.0P x 150 mm
Quantity
50.00 NOS
Chemical Composition %
| C | Mn | P | S | Si | Cr | Ni | Cb+Ta | N | Cu | B | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.022 | 1.45 | 0.025 | 0.008 | 0.50 | 17.50 | 10.50 | 0.50 | 0.14 | 0.75 | 0.003 | Rem |
| Max: 0.030 | Max: 2.00 | Max: 0.045 | Max: 0.030 | Max: 1.00 | 17.00-19.00 | 9.00-13.00 | 10xC-1.00 | 0.10-0.16 | 0.50-1.50 | 0.001-0.010 | Rem |
Mechanical Properties
| TENSILE STRENGTH (Mpa) | YIELD STRENGTH 0.2% Offset (Mpa) | % ELONGATION (GL-50mm) | HARDNESS (HRB) |
|---|---|---|---|
| 590.00 | 275.00 | 42.00 | 84, 85, 83 |
| Min: 550 | Min: 240 | Min: 30 | Max: 90 (B8CLNCuBA) Max: 96 (B8CLNCuB) |
Standard References & Compliance
Our MTC certificates map to the demanding industrial standards for fasteners. The test reports confirm compliance with As Per ASME/ASTM A193 Grade B8CLNCuB / B8CLNCuBA UNS S34752 with respect to the tests carried out.
| Standard / Requirement | Confirmation on Certificate |
|---|---|
| Visual Inspection | 100% visual inspection carried out & found free from defects. |
| Safety Requirements | Material is free from radioactive contamination. |
| Weld Repairs | No weld repair Perform. |
| Dimensional Accuracy | All Dimensions are as per PO Specification. |
Certification Details
We confirm that above mentioned Items was Manufactured, Sampled, Tested and Inspected in accordance with the subjected Customer's Purchase Order and as applicable Drawings, Material Specifications, Codes & Standards and the results of the items have been determined to meet the users' requirements.
Documentation Standard
- EN 10204-2004: 3.1 Standard
- Free from radioactive contamination
- Certified ISO 9001: 2015 Company
Heat Treatments
- Carbide Solution Treated (In Finished Condition for B8CLNCuBA)
- Quenching Medium: Water quenched
Testing Conditions
- Chemical, Mechanical & hardness test carried at room temperature 25°C
- 100% visual inspection carried out
Technical FAQs — ASTM A193 Grade B8CLNCuB & B8CLNCuBA MTC Certificate
Why add Copper and Boron to an already stabilized alloy?
Grade B8CLNCuB (UNS S34752) takes the highly stable, high-strength B8CLN matrix and supercharges it for severe industrial conditions. The Copper addition improves resistance to reducing acidic environments (like sulfuric acid). More importantly, the trace addition of Boron (typically 0.001% - 0.010%) radically improves the alloy's hot-workability during forging and significantly increases its high-temperature creep rupture strength in critical pressure vessel applications.
What is the difference between Grade B8CLNCuB and B8CLNCuBA?
Grade B8CLNCuB (Class 1) is carbide solution treated before the final machining and threading processes. Grade B8CLNCuBA (Class 1A) is carbide solution treated in the finished condition. Solution treating the completely formed bolt removes residual stresses generated during cold working or threading. This guarantees maximum resistance to stress-corrosion cracking and maintains a strict 90 HRB maximum hardness limit, whereas B8CLNCuB is allowed up to 96 HRB.
Are the materials verified to be free from radioactive contamination?
Yes, the MTC document strictly states that the material has been verified as free from radioactive contamination and has undergone a 100% visual inspection to ensure it is completely free from manufacturing defects before dispatch.