ASTM A193 / A320 SPECIALTY AUSTENITIC BOLTS (B8C, B8T, B8F, B8P, B8LN, B8MLN) – MTC
ASTM A193 / A320 Specialty Austenitic Bolts Sample MTC Certificate
Access a comprehensive, professionally formatted Material Test Certificate according to EN 10204-2004: 3.1. This download package includes representative QA data for specialty austenitic grades including B8C, B8T, B8F, B8P, B8LN, and B8MLN. Inspect the exact documentation your QA teams will receive with every Ananka Fasteners order.
What's Inside This Specialty Austenitic MTC Certificate
This mill test certificate mirrors the rigorous documentation package standard for our specialized alloy fasteners. While standard 304 and 316 cover most needs, these specialty grades are engineered for extreme machining, stabilization at high temperatures, or specific strength requirements.
- Stabilized Grades (B8T & B8C): Verification of Titanium (B8T / 321) or Columbium/Niobium (B8C / 347) additions to prevent carbide precipitation and intergranular corrosion at elevated temperatures.
- Free-Machining (B8F): Detailed chemistry showing Sulfur or Selenium additions (303) for rapid, high-volume machining and threading without galling.
- High-Formability (B8P): Verification of elevated Nickel limits (305) to radically reduce work-hardening during severe cold heading or deep drawing.
- Nitrogen-Strengthened (B8LN & B8MLN): Confirms low-carbon chemistry (for weldability) offset by Nitrogen additions to restore and boost yield strength (304LN / 316LN).
- Quality Compliance: All grades verified 100% free from defects and radioactive contamination.
Live Preview: Representative Data (Grade B8T - Titanium Stabilized)
Review the standard layout using ASTM A193 Grade B8T (AISI 321) as our showcase specialty parameter before downloading the full multi-grade document.
TC Number
S165/26-XX
TC Date
18.06.20XX
Material Spec
ASTM A193 Grade B8T Class 1 UNS S32100
Bar Shape / Size
Hex Bolt / M20
Dimensions / Item
Hex Bolt M20-2.5P x 100 mm
Quantity
100.00 NOS
Chemical Composition % (B8T Representative)
| C | Mn | P | S | Si | Cr | Ni | Ti | Fe |
|---|---|---|---|---|---|---|---|---|
| 0.040 | 1.50 | 0.025 | 0.010 | 0.50 | 17.50 | 10.50 | 0.35 | Rem |
| Max: 0.08 | Max: 2.00 | Max: 0.045 | Max: 0.030 | Max: 1.00 | 17.00-19.00 | 9.00-12.00 | Min: 5x(C+N) | Rem |
Mechanical Properties
| TENSILE STRENGTH (Mpa) | YIELD STRENGTH 0.2% Offset (Mpa) | % ELONGATION (GL-50mm) | HARDNESS (HRB) |
|---|---|---|---|
| 560.00 | 245.00 | 45.00 | 84, 85, 83 |
| Min: 515 | Min: 205 | Min: 30 | 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 and ASTM A320 requirements for specialty austenitic grades 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 (Class 1 / Class 1A verified)
- Quenching Medium: Water quenched
Testing Conditions
- Chemical, Mechanical & hardness test carried at room temperature 25°C
- Low-Temperature Impact testing included if certified to A320
Technical FAQs — Specialty Austenitic Bolts MTC Certificate
What qualifies these grades as "Specialty Austenitic"?
While standard ASTM A193 Grade B8 (304) and B8M (316) handle most industrial applications, specialty grades are engineered for specific weaknesses. For example, B8T and B8C add Titanium and Columbium to stabilize the steel against high temperatures. B8F adds Sulfur for extreme machinability. B8LN and B8MLN restrict carbon for welding but add Nitrogen to keep the bolt strong.
Are these grades dual-certified to ASTM A320?
Yes. Austenitic stainless steels naturally retain excellent toughness and ductility at cryogenic temperatures. Because of this, grades like B8T, B8C, and B8MLN are frequently cross-certified to ASTM A320 (for low-temperature service) depending on the specific customer requirement and required Charpy impact testing noted on the MTC.
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.
