Ninthore Overseas is one of the Leading Manufacturer And Exporter of Alloy Steel B16 Washers, which is packed flawlessly and delivered to the client. With the firm commitment to quality, we have engaged ourselves in providing Alloy Steel B16 Flat Washers to our esteemed patrons, which are widely appreciated by the large number of clients due to its cost – effectiveness and long lasting features. We hold expertise in offering a wide range of Alloy Steel B16 Lock Washers, which are made as per world class standard and using best available technologies.

So as to furnish the rising needs of our esteemed patrons, we have come up with a wide class assortment of Alloy Steel B16 Sealing Washers, which are being made by making utilization of finest – class basic material altogether with modernized amenities and tackles under the assistance of capable executives of our crew. Following are the features of our Alloy Steel B16 Split Washers: Durability, Corrosion resistant, and Fine finish. With our in – depth knowledge and experience, we are engaged in offering a finest quality Alloy Steel B16 Slot Washers, which are being manufactured by using high grade raw material and sophisticated technology.

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In addition, Alloy Steel B16 Machine Washers are available in various features like thickness, surface finish and also compliment the emerging needs of engineering industry. Moreover, clients can avail Alloy Steel B16 Star Washers at the most comprehensive range of price.

Alloy Steel B16 Washers Specifications
Specifications : ASTM A 193 ASME SA 193
Standard : IS, ASTM, BS and all International Standards
Length : 3 mm to 200 mm
Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Type : Flat Washer, Lock Washer, Sealing Washer, Split Washer, Slot Washer, Machine Washer, Star Washer SPRINGS – Wire Spring & Flat Spring.

B16 Alloy Steel Washers Chemical Composition

Alloy Steel B16 C Mn P S Si Ni Cr
0.15 max 1.00 max 0.040 0.030 1.00 max 11.50-13.50

Physical Properties

Dia Minimum
° F (°C)
min, ksi
( MPa)
Strength. min,
0.2% offset, Ksi
( MPa)
Elongation in
min %
Reduction of
min %
2 1/2″ and under 1200(650) 125(860) 105(725) 18 50 321HB
or 35 HRC
21/2″ to 4″
1200(650) 110(760) 95(655) 17 45 302HB
or 33 HRC
over 4″ to
1200(650 ) 100(690) 85(586) 16 45 227HB
or 29 HRC

Mechanical Properties:

Grade Size Tensile ksi, min Yield, ksi, min Elong, %, min RA % min
B16 Up to 2-1/2 125 105 18 50
2-5/8 – 4 110 95 17 45
4-1/8 – 7 100 85 16 45

Alloy Steel B16 Washers Application Industries

  • Off-Shore Oil Drilling Companies
  • Power Generation
  • Petrochemicals
  • Gas Processing
  • Specialty Chemicals
  • Pharmaceuticals
  • Pharmaceutical Equipment
  • Chemical Equipment
  • Sea Water Equipment
  • Heat Exchangers
  • Condensers
  • Pulp and Paper Industry

B16 Alloy Steel Washers Test Certificates

We at Ninthore Overseas provide Manufacturer TC (Test Certificate) in accordance to EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report. We also provide Standard certificates like EN 10204 3.1 and additional requirement like. NACE MR 01075. FERRIT CONTENT as per norms if requested by clients.

• EN 10204/3.1B,
• Raw Materials Certificate
• 100% Radiography Test Report
• Third Party Inspection Report, etc.

Material Testing

We at Ninthore Overseas ensure that all our materials go through strict quality tests before dispatching them to our clients.

• Mechanical Testing Such as Tensile of Area
• Hardness Test
• Chemical Analysis – Spectro Analysis
• Positive Material Identification – PMI Testing
• Flattening Test
• Micro and Macro Test
• Pitting Resistance Test
• Flaring Test
• Intergranular Corrosion (IGC) Test


• Commercial Invoice which includes HS Code
• Packing List including net weight and gross weight, number of boxes, Marks and Numbers
• Certificate of Origin legalized/attested by Chamber of Commerce or Embassy
• Fumigation Certificates
• Raw Material Test Reports
• Material Traceability Records
• Quality Assurance Plan (QAP)
• Heat Treatment Charts
• Test Certificates certifying NACE MR0103, NACE MR0175
• Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2
• Guarantee Letter
• NABL approved Laboratory Test Reports
• Welding Procedure Specification/Procedure Qualification Record, WPS/PQR
• Form A for the purposes of the Generalized System of Preferences (GSP)