ASTM A193 GRADE B8 CLASS 2 BOLTS – MTC
ASTM A193 Grade B8 Class 2 Sample MTC Certificate
Access a comprehensive, professionally formatted Material Test Certificate according to EN 10204-2004: 3.1 for ASTM A193 Grade B8 Class 2 (AISI 304 / UNS S30400). Inspect the exact documentation your QA and engineering teams will receive with every Ananka Fasteners order.
What's Inside This ASTM A193 B8 Class 2 MTC Certificate
This sample mill test certificate mirrors the rigorous QA documentation package standard for high-strength, strain-hardened austenitic stainless steel fasteners shipped from Ananka Fasteners Pvt Ltd.
- Full Traceability: Certified with TC No.: S121/26-XX and corresponding ASTM specifications.
- Chemical Compliance: Detailed breakdowns verifying the classic 18/8 (304) base chemistry, providing excellent general corrosion resistance across broad industrial applications.
- Class 2 Strain Hardening: Verification that the material is carbide solution treated and then subsequently strain-hardened. This crucial cold-working step significantly elevates the tensile and yield strength compared to standard Class 1 fasteners.
- Enhanced Mechanical Properties: Comprehensive reporting of Tensile Strength (Min 690 MPa for sizes up to 3/4"), Yield Strength (Min 345 MPa), Elongation (Min 30%), and controlled maximum Hardness (up to 321 HBW / 35 HRC). Note: Minimum strength requirements decrease as diameter increases for Class 2.
- Quality Compliance: 100% visual inspection carried out and verified free from defects and radioactive contamination.
Live Preview: ASTM A193 Grade B8 Class 2 MTC Data
Review the standard parameters and layout before downloading the full document.
TC Number
S121/26-XX
TC Date
25.07.20XX
Material Spec
ASTM A193 Grade B8 Class 2 UNS S30400
Bar Shape / Size
Round Bar / 16 mm (5/8")
Dimensions / Item
Stud Bolt M16-2.0P x 100 mm
Quantity
150.00 NOS
Chemical Composition %
| C | Mn | P | S | Si | Cr | Ni | Fe |
|---|---|---|---|---|---|---|---|
| 0.055 | 1.45 | 0.028 | 0.012 | 0.50 | 18.50 | 8.50 | Rem |
| Max: 0.08 | Max: 2.00 | Max: 0.045 | Max: 0.030 | Max: 1.00 | Min: 18.00 Max: 20.00 |
Min: 8.00 Max: 11.00 |
Rem |
Mechanical Properties
| TENSILE STRENGTH (Mpa) | YIELD STRENGTH 0.2% Offset (Mpa) | % ELONGATION (GL-50mm) | HARDNESS (HRC) |
|---|---|---|---|
| 720.00 | 450.00 | 38.00 | 26, 28, 27 |
| Min: 690 (Up to 3/4") | Min: 345 (Up to 3/4") | Min: 30 | 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 B8 Class 2 UNS S30400 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 B8 Class 2 MTC Certificate
What is the difference between Grade B8 Class 1 and Class 2?
While both use the same AISI 304 base chemistry, they undergo different processing. Class 1 is only carbide solution treated (annealed), resulting in a softer material with lower yield strength (Min 205 MPa). Class 2 is carbide solution treated and then intentionally strain-hardened (cold-worked). This drastically increases its strength, making it suitable for much higher load capacities (Min yield strength of 345 MPa for sizes up to 3/4").
Does the diameter of the bolt affect Class 2 mechanical properties?
Yes. Because strain hardening involves physically cold-working the metal, it is harder for the strengthening effects to penetrate the core of very thick bars. According to ASTM A193, the minimum required yield and tensile strengths for Class 2 fasteners step down progressively as the diameter increases past 3/4" (19mm).
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.