ASTM A193 GRADE B6 – MTC
ASTM A193 Grade B6 Sample MTC Certificate
Access a comprehensive, professionally formatted Material Test Certificate according to EN 10204-2004: 3.1 for ASTM A193 Grade B6. Review the rigorous documentation verifying this 12% Chromium martensitic stainless steel's chemistry, specialized heat treatments, and mechanical strength intended for high-temperature pressure vessels and highly corrosive environments.
What's Inside This A193 B6 MTC Certificate
This sample mill test certificate emphasizes the key testing parameters required for ASTM A193 Grade B6—a high-strength, martensitic stainless steel (similar to AISI 410) chosen for its excellent balance of mechanical strength and resistance to scaling/oxidation up to 1200°F (650°C).
- Full Traceability: Certified with TC No.: S95/26-XX and fully mapped to ASTM A193 B6 specifications.
- 12% Chromium Chemistry: Explicit verification of the critical 11.50 - 13.50% Chromium range, which provides superior resistance to steam, hot gases, and mild corrosive agents in petrochemical processing.
- Controlled Heat Treatment: Verification of Quenching and Tempering processes. The document ensures the material is tempered at a strict minimum of 1100°F (593°C) to prevent embrittlement and normalize the martensitic grain structure.
- Mechanical Performance: Detailed logs of high Tensile Strength (Min 760 MPa / 110 ksi), Yield Strength (Min 585 MPa / 85 ksi), Elongation (Min 15%), and Hardness mapping (Max 321 HBW).
- Quality Compliance: 100% visual inspection and dimensional accuracy checks executed as per ASME B18.2.1 standards to guarantee defect-free fasteners.
Live Preview: ASTM A193 Grade B6 MTC Data
Review the standard parameters and layout before downloading the full document.
TC Number
S95/26-XX
TC Date
22.09.20XX
Material Spec
ASTM A193 GRADE B6
Bar Shape / Size
Round Bar / 22 mm
Dimensions / Item
Stud Bolt M22-2.5P x 150 mm
Quantity
40.00 NOS
Chemical Composition %
| C | Mn | P | S | Si | Cr |
|---|---|---|---|---|---|
| 0.12 | 0.45 | 0.020 | 0.015 | 0.30 | 12.50 |
| Max: 0.15 | Max: 1.00 | Max: 0.040 | Max: 0.030 | Max: 1.00 | Min: 11.50 Max: 13.50 |
Mechanical Properties
| TENSILE STRENGTH (MPa) | YIELD STRENGTH 0.2% Offset (MPa) | % ELONGATION (GL-50mm) | HARDNESS (HBW) |
|---|---|---|---|
| 810.50 | 645.20 | 20.50 | 265, 268, 266 |
| Min: 760 (110 ksi) | Min: 585 (85 ksi) | Min: 15 | Max: 321 |
Standard References & Compliance
Our MTC certificates comprehensively align with the demanding specifications of the power generation and chemical processing sectors. The test reports confirm exact compliance with ASME/ASTM A193 / A193M Grade B6 with respect to the specific heat and lot tested.
| Standard / Requirement | Confirmation on Certificate |
|---|---|
| Visual Inspection | 100% visual inspection carried out & found free from defects. |
| Safety Requirements | Material is free from radioactive contamination and mercury. |
| Weld Repairs | No weld repair performed. |
| Dimensional Accuracy | All Dimensions are as per PO Specification / ASME B18.2.1 / B18.2.2. |
Certification Details
We confirm that the above mentioned items were Manufactured, Sampled, Tested, and Inspected in accordance with the subjected Customer's Purchase Order and applicable Drawings, Material Specifications, Codes & Standards.
Documentation Standard
- EN 10204-2004: 3.1 Standard
- Free from radioactive contamination
- Certified ISO 9001: 2015 Company
Heat Treatments
- Quenched & Tempered
- Min Tempering Temp: 1100°F (593°C)
Testing Conditions
- Mechanical tests carried out at room temperature
- 100% visual inspection carried out
Technical FAQs — ASTM A193 Grade B6 MTC
Why use 12% Chromium (Type 410) for Grade B6 fasteners?
The 12% Chromium content places Grade B6 in the martensitic stainless steel family. This specific chemistry provides an outstanding balance—it is highly hardenable for excellent tensile strength, while still offering robust resistance to oxidation and corrosion from steam, hot gases, and mild acids.
What is the significance of the 1100°F (593°C) minimum tempering temperature?
Martensitic stainless steels can become brittle if tempered improperly. The ASTM A193 specification dictates a minimum tempering temperature of 1100°F (593°C) to ensure the fasteners achieve the required ductility and toughness while relieving internal quenching stresses, making them safe for pressurized service.
What is the difference between Grade B6 and Grade B6X?
While both are made from Type 410 stainless steel, they have different mechanical requirements. Grade B6 has a higher minimum tensile strength (110 ksi) and yield strength (85 ksi). Grade B6X requires a lower minimum tensile strength (90 ksi) and yield strength (70 ksi) but mandates a higher minimum tempering temperature (1200°F / 650°C), usually for applications prioritizing greater ductility over maximum strength.