ASTM A193 GRADE B5 – MTC
ASTM A193 Grade B5 Sample MTC Certificate
Access a comprehensive, professionally formatted Material Test Certificate according to EN 10204-2004: 3.1 for ASTM A193 Grade B5. Review the strict documentation verifying the 5% Chromium alloy chemistry, specialized heat treatments, and mechanical strength intended for highly corrosive petroleum and high-temperature service.
What's Inside This A193 B5 MTC Certificate
This sample mill test certificate highlights the critical testing parameters required for ASTM A193 Grade B5—a ferritic/martensitic stainless steel (similar to AISI 501) renowned for its oxidation resistance in severe refinery environments.
- Full Traceability: Certified with TC No.: S92/26-XX and fully mapped to ASTM A193 B5 standards.
- Chromium-Molybdenum Chemistry: Explicit verification of the critical 4.00-6.00% Chromium and 0.40-0.65% Molybdenum ranges. This composition provides excellent resistance to hot sulfide corrosion frequently found in petrochemical processing.
- Controlled Heat Treatment: Verification of Quenching and Tempering processes, guaranteeing the material has been tempered at a minimum of 1100°F (593°C) to ensure ideal ductility and relieve residual stresses.
- Mechanical Performance: Detailed logs of Tensile Strength (Min 690 MPa / 100 ksi), Yield Strength (Min 550 MPa / 80 ksi), Elongation (Min 16%), and Hardness (Max 321 HBW).
- Quality Compliance: 100% visual inspection and dimensional accuracy checks to ensure completely defect-free fasteners prior to shipment.
Live Preview: ASTM A193 Grade B5 MTC Data
Review the standard parameters and layout before downloading the full document.
TC Number
S92/26-XX
TC Date
18.08.20XX
Material Spec
ASTM A193 GRADE B5
Bar Shape / Size
Round Bar / 20 mm
Dimensions / Item
Hex Head Bolt M20-2.5P x 100 mm
Quantity
25.00 NOS
Chemical Composition %
| C | Mn | P | S | Si | Cr | Mo |
|---|---|---|---|---|---|---|
| 0.15 | 0.60 | 0.022 | 0.012 | 0.45 | 5.10 | 0.52 |
| Min: 0.10 | Max: 1.00 | Max: 0.040 | Max: 0.030 | Max: 1.00 | Min: 4.00 Max: 6.00 |
Min: 0.40 Max: 0.65 |
Mechanical Properties
| TENSILE STRENGTH (MPa) | YIELD STRENGTH 0.2% Offset (MPa) | % ELONGATION (GL-50mm) | HARDNESS (HBW) |
|---|---|---|---|
| 745.20 | 610.50 | 22.50 | 245, 248, 242 |
| Min: 690 (100 ksi) | Min: 550 (80 ksi) | Min: 16 | Max: 321 |
Standard References & Compliance
Our MTC certificates precisely align with the demanding specifications of the petrochemical and refining industries. The test reports confirm exact compliance with ASME/ASTM A193 / A193M Grade B5 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. |
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 B5 MTC
Why is a 5% Chromium content important for Grade B5?
The addition of roughly 5% Chromium (along with 0.5% Molybdenum) significantly boosts the alloy's resistance to high-temperature oxidation and sulfide corrosion. This makes B5 a preferred material in petroleum refineries and chemical processing environments where standard carbon steels would rapidly degrade.
What is the significance of the 1100°F (593°C) tempering temperature on the MTC?
ASTM A193 explicitly requires Grade B5 to be quenched and tempered, with a strict minimum tempering temperature of 1100°F (593°C). This high tempering heat relieves internal stresses and ensures the material possesses the necessary ductility and toughness, preventing brittle failure when exposed to high operational stresses and temperatures.
How does Grade B5 compare to standard B7 fasteners?
While Grade B7 (Cr-Mo steel) is standard for many high-pressure, high-temperature uses, Grade B5 (with its higher 5% Chromium content) offers vastly superior corrosion resistance against hot sulfur compounds. It is specifically selected when the corrosive environment in a refinery exceeds the capabilities of standard B7 bolting.