ASTM A193 Grade B8S & B8SA MTC Certificate Sample – Download Free PDF

ASTM A193 Grade B8S & B8SA Sample MTC Certificate

Access a comprehensive, professionally formatted Material Test Certificate according to EN 10204-2004: 3.1 for ASTM A193 Grade B8S and B8SA (Nitronic 60 / UNS S21800). Inspect the exact documentation your QA and engineering teams will receive with every Ananka Fasteners order.

ISO 9001-2015 EN 10204 3.1 ASTM A193 UNS S21800

What's Inside This ASTM A193 B8S / B8SA MTC Certificate

This sample mill test certificate mirrors the rigorous QA documentation package standard for highly alloyed austenitic stainless steel fasteners (Nitronic 60) shipped from Ananka Fasteners Pvt Ltd.

Full Traceability: Certified with TC No.: S91/26-XX[cite: 1] and S92/26-XX[cite: 1] with their corresponding ASTM specifications.
Specialized Alloy Chemistry: Detailed breakdowns verifying the significant additions of Silicon (3.50% - 4.50%)[cite: 1] and Manganese (7.00% - 9.00%)[cite: 1] combined with Nitrogen (0.08% - 0.18%)[cite: 1] that define Grade B8S / UNS S21800 to inhibit galling and wear.
Solution Treatment Verification: Confirms the material is Carbide Solution Treated[cite: 1] to ensure optimal corrosion resistance and material properties.
Mechanical Properties: Comprehensive reporting of Tensile Strength (Min 655 MPa)[cite: 1], Yield Strength 0.2% Offset (Min 345 MPa)[cite: 1], Elongation (Min 35%)[cite: 1], Reduction of Area (Min 55%)[cite: 1], and controlled maximum Hardness (28 HRC max)[cite: 1].
Quality Compliance: Fully documented impact testing where required and thorough documentation of the manufacturing standards met.

ASTM A193 Grade B8S and B8SA EN 10204 3.1 Sample Material Test Certificate preview

Note: This is a representative sample. Actual MTCs are issued per-heat with unique test values for every production lot to ensure strict specification conformance.

Live Preview: ASTM A193 Grade B8S Class 1 MTC Data

Review the standard parameters and layout before downloading the full document (Data reflects TC No. S91/26-XX).

TC Number

S91/26-XX[cite: 1]

TC Date

11.04.20XX[cite: 1]

Material Spec

ASTM A193 GR. B8S CL.1[cite: 1]

Bar Shape / Size

Bar Round / 20.0 mm[cite: 1]

Dimensions / Item

Stud Bolt M-20-2P x 90 mm[cite: 1]

Quantity

10.00 NOS[cite: 1]

Chemical Composition %

C	Mn	P	S	Si	Cr	Ni	N
0.022[cite: 1]	7.38[cite: 1]	0.024[cite: 1]	0.021[cite: 1]	4.10[cite: 1]	16.45[cite: 1]	8.37[cite: 1]	0.14[cite: 1]
Max: 0.10[cite: 1]	Min: 7.00 Max: 9.00[cite: 1]	Max: 0.060[cite: 1]	Max: 0.030[cite: 1]	Min: 3.50 Max: 4.50[cite: 1]	Min: 16.00 Max: 18.00[cite: 1]	Min: 8.00 Max: 9.00[cite: 1]	Min: 0.08 Max: 0.18[cite: 1]

Mechanical Properties

TENSILE STRENGTH (MPa)	YIELD STRENGTH 0.2% Offset (MPa)	% ELONGATION (GL-50mm)	% REDUCTION AREA	HARDNESS (HRC)
731.60[cite: 1]	443.30[cite: 1]	47.12[cite: 1]	67.09[cite: 1]	22, 25, 24 HRC[cite: 1]
Min: 655[cite: 1]	Min: 345[cite: 1]	Min: 35[cite: 1]	Min: 55[cite: 1]	Max: 28[cite: 1]

Download Full Report (PDF)

View Our Datasheet: View ASTM A193 Grade B8S Datasheet →

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 B8S / B8SA UNS S21800 with respect to the tests carried out.

Standard / Requirement	Confirmation on Certificate
Visual Inspection	Items manufactured, sampled, tested, and inspected in accordance with the Customer's Purchase Order.[cite: 1]
Code Adherence	Meets applicable Drawings, Material Specifications, Codes & Standards.[cite: 1]
Final Results	Results of the items have been determined to meet the users' requirements and found satisfactory.[cite: 1]

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.[cite: 1]

Documentation Standard

✓ EN 10204-2004: 3.1 Standard[cite: 1]
✓ An ISO 9001: 2015 Company[cite: 1]

Heat Treatments

✓ Carbide Solution Treated[cite: 1]
✓ Fully documented process parameters

Testing Conditions

✓ Certified Chemical Lab Testing[cite: 1]
✓ Impact Test / Charpy V Notch testing framework available[cite: 1]

Technical FAQs — ASTM A193 Grade B8S & B8SA MTC Certificate

Why are Silicon and Manganese added in high amounts to Grade B8S (Nitronic 60)?

Grade B8S and B8SA are manufactured from Nitronic 60 (UNS S21800). The significant addition of Manganese (7-9%)[cite: 1] and Silicon (3.5-4.5%)[cite: 1] combined with Nitrogen (0.08-0.18%)[cite: 1] provides exceptional resistance to galling and wear compared to standard stainless steels like 304 or 316. This makes these fasteners ideal for applications with frequent assembly and disassembly.

What is the difference between Grade B8S and B8SA?

While both are Nitronic 60 (UNS S21800) stainless steel, Grade B8SA typically dictates that the fasteners are carbide solution treated in the finished condition. This process removes any residual work hardening caused by thread rolling and machining, yielding a more ductile fastener. As seen in the MTC, B8SA fasteners maintain excellent tensile strength (e.g., 768.47 MPa)[cite: 1] while adhering to a strict hardness maximum (28 HRC)[cite: 1].