ASTM A193 GRADE B8MLCuN BOLTS – MTC
ASTM A193 Grade B8MLCuN Sample MTC Certificate
Access a comprehensive, professionally formatted Material Test Certificate according to EN 10204-2004: 3.1 for ASTM A193 Grade B8MLCuN (Nitrogen-Strengthened, Copper-Alloyed 316 / UNS S31254). Inspect the exact documentation your QA and engineering teams will receive with every Ananka Fasteners order.
What's Inside This ASTM A193 B8MLCuN MTC Certificate
This sample mill test certificate mirrors the rigorous QA documentation package standard for highly specialized, super-austenitic stainless steel fasteners (commonly referred to as 254 SMO®) shipped from Ananka Fasteners Pvt Ltd.
- Full Traceability: Certified with TC No.: S148/26-XX and corresponding ASTM specifications.
- Advanced 6-Moly Chemistry: Detailed breakdowns verifying the extreme levels of Molybdenum (6.00% - 6.50%) combined with high Chromium and Nitrogen. This super-austenitic matrix provides resistance to pitting and crevice corrosion comparable to nickel-based alloys like Hastelloy in harsh seawater or bleaching environments.
- Copper Alloying: Verification of Copper addition (0.50% - 1.00%), which significantly improves resistance to strong reducing acids (like sulfuric and phosphoric acids).
- Mechanical Properties: Comprehensive reporting of Tensile Strength (Min 655 MPa), a highly elevated Yield Strength requirement (Min 310 MPa), Elongation (Min 35%), and strictly controlled Hardness.
- Quality Compliance: 100% visual inspection carried out and verified free from defects and radioactive contamination.
Live Preview: ASTM A193 Grade B8MLCuN MTC Data
Review the standard parameters and layout before downloading the full document.
TC Number
S148/26-XX
TC Date
12.01.20XX
Material Spec
ASTM A193 Grade B8MLCuN UNS S31254
Bar Shape / Size
Hex Bolt / M20
Dimensions / Item
Heavy Hex Bolt M20-2.5P x 100 mm
Quantity
60.00 NOS
Chemical Composition %
| C | Mn | P | S | Si | Cr | Ni | Mo | Cu | N | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| 0.015 | 0.50 | 0.020 | 0.005 | 0.40 | 20.00 | 18.00 | 6.20 | 0.75 | 0.20 | Rem |
| Max: 0.020 | Max: 1.00 | Max: 0.030 | Max: 0.010 | Max: 0.80 | 19.50-20.50 | 17.50-18.50 | 6.00-6.50 | 0.50-1.00 | 0.18-0.22 | Rem |
Mechanical Properties
| TENSILE STRENGTH (Mpa) | YIELD STRENGTH 0.2% Offset (Mpa) | % ELONGATION (GL-50mm) | HARDNESS (HRB) |
|---|---|---|---|
| 690.00 | 330.00 | 45.00 | 90, 91, 89 |
| Min: 655 | Min: 310 | Min: 35 | Max: 96 |
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 B8MLCuN UNS S31254 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
- 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 B8MLCuN MTC Certificate
What makes Grade B8MLCuN (UNS S31254) a "Super-Austenitic" alloy?
This grade, frequently commercialized as 254 SMO®, is designed for the most aggressive environments where standard 316L fails. It features extremely high levels of Molybdenum (up to 6.50%), Chromium, and Nitrogen. This combination results in a Pitting Resistance Equivalent Number (PREN) well over 42, giving it corrosion resistance comparable to much more expensive nickel-based alloys in seawater and pulp mill bleach plants.
Why is Copper (Cu) added to this specific alloy?
The controlled addition of Copper (0.50% - 1.00%) is critical for improving the material's resistance to strong reducing acids. While the high molybdenum content handles chloride pitting, the copper specifically helps the fastener survive exposure to sulfuric, phosphoric, and acetic acids.
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.