ASTM A193 GRADE B8M CLASS 2 BOLTS – MTC
ASTM A193 Grade B8M Class 2 Sample MTC Certificate
Access a comprehensive, professionally formatted Material Test Certificate according to EN 10204-2004: 3.1 for ASTM A193 Grade B8M Class 2 (AISI 316 / UNS S31600). Inspect the exact documentation your QA and engineering teams will receive with every Ananka Fasteners order.
What's Inside This ASTM A193 B8M Class 2 MTC Certificate
This sample mill test certificate mirrors the rigorous QA documentation package standard for high-strength, strain-hardened, marine-grade austenitic stainless steel fasteners shipped from Ananka Fasteners Pvt Ltd.
- Full Traceability: Certified with TC No.: S135/26-XX and corresponding ASTM specifications.
- Molybdenum Enriched Chemistry: Detailed breakdowns verifying the addition of 2.00% - 3.00% Molybdenum to the AISI 316 base, providing elite resistance to chloride-induced pitting and crevice corrosion compared to standard 304 stainless.
- Class 2 Strain Hardening: Verification that the material is carbide solution treated and subsequently strain-hardened (cold-worked). This specialized process radically increases the mechanical strength of the fastener.
- Enhanced Mechanical Properties: Comprehensive reporting of elevated Tensile Strength (Min 760 MPa / 110 ksi for sizes up to 3/4"), Yield Strength (Min 655 MPa / 95 ksi), Elongation (Min 15%), and controlled maximum Hardness (up to 321 HBW / 35 HRC).
- Quality Compliance: 100% visual inspection carried out and verified free from defects and radioactive contamination.
Live Preview: ASTM A193 Grade B8M Class 2 MTC Data
Review the standard parameters and layout before downloading the full document.
TC Number
S135/26-XX
TC Date
20.11.20XX
Material Spec
ASTM A193 Grade B8M Class 2 UNS S31600
Bar Shape / Size
Hex Bolt / M16 (5/8")
Dimensions / Item
Heavy Hex Bolt M16-2.0P x 80 mm
Quantity
150.00 NOS
Chemical Composition %
| C | Mn | P | S | Si | Cr | Ni | Mo | Fe |
|---|---|---|---|---|---|---|---|---|
| 0.055 | 1.45 | 0.025 | 0.010 | 0.50 | 16.50 | 10.50 | 2.10 | Rem |
| Max: 0.08 | Max: 2.00 | Max: 0.045 | Max: 0.030 | Max: 1.00 | Min: 16.00 Max: 18.00 |
Min: 10.00 Max: 14.00 |
Min: 2.00 Max: 3.00 |
Rem |
Mechanical Properties
| TENSILE STRENGTH (Mpa) | YIELD STRENGTH 0.2% Offset (Mpa) | % ELONGATION (GL-50mm) | HARDNESS (HRC) |
|---|---|---|---|
| 800.00 | 680.00 | 22.00 | 28, 29, 28 |
| Min: 760 (Up to 3/4") | Min: 655 (Up to 3/4") | Min: 15 | Max: 35 |
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 B8M Class 2 UNS S31600 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 and Strain Hardened
- 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 B8M Class 2 MTC Certificate
What is the difference between Grade B8 Class 2 and Grade B8M Class 2?
While both are strain-hardened to achieve high yield and tensile strength, Grade B8 is made from AISI 304, and Grade B8M is made from AISI 316. The critical difference is that B8M contains 2.00% to 3.00% Molybdenum, which vastly improves the fastener's resistance to pitting and crevice corrosion in marine and chloride-rich environments.
Does the diameter of the B8M Class 2 bolt affect its mechanical properties?
Yes. Strain hardening involves physically cold-working the metal. It is harder for the strengthening effects of cold-working to penetrate the core of very thick bars. Therefore, according to ASTM A193, the minimum required yield and tensile strengths step down progressively as the diameter increases. For example, bolts up to 3/4" require a minimum yield of 95 ksi (655 MPa), while bolts over 1" to 1-1/4" require a minimum yield of 65 ksi (450 MPa).
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.