Manufacturer, Supplier & Exporter of 309 Stainless Steel Shim

Riddhi Siddhi Impex is a leading manufacturer and domestic supplier of 309 Stainless Steel Shim in India, catering to diverse industrial applications that demand high-temperature resistance and superior corrosion performance. With years of metallurgical expertise and cutting-edge manufacturing facilities, we produce precision-engineered SS 309 shims that meet stringent global quality standards. These shims are widely used in thermal processing, power generation, heat treatment equipment, and chemical industries.

309 Stainless Steel Shim is an austenitic chromium-nickel stainless steel known for its excellent oxidation resistance at elevated temperatures. It contains a higher percentage of chromium and nickel than SS 304, offering increased strength and corrosion resistance in extreme environments. At Riddhi Siddhi Impex, our 309 SS shims are manufactured using high-purity raw materials, making them reliable for use in furnaces, kilns, exhaust systems, and heat exchanger assemblies..

As a trusted 309 Stainless Steel Shim Domestic Supplier, Riddhi Siddhi Impex delivers to customers across major Indian cities including Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, and Vadodara. Our advanced logistics and inventory management systems ensure prompt dispatch and availability of all standard sizes and custom specifications across India’s industrial hubs.

Our shims are precision slit to thicknesses ranging from 0.02 mm to 3 mm and are available in coils, sheets, or cut-to-size formats. Whether it’s for structural reinforcement, thermal insulation, or spacing in assemblies, our 309 stainless steel shims are designed to provide consistent mechanical performance and dimensional accuracy. We maintain rigorous quality control to ensure each batch meets ASTM, ASME, and other international specifications.

In addition to metros, Riddhi Siddhi Impex actively supplies SS 309 shims to regional industrial cities such as Rajkot, Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, and Varanasi. We understand the unique procurement and delivery needs of customers across different sectors, ensuring our shims are available just-in-time with complete traceability and test certifications.

309 Stainless Steel Shim

Specifications

Product Name	309 Stainless Steel Shim
Grade	SS 309
Standard	ASTM A240 / ASME SA240
Thickness	0.02 mm – 3.00 mm
Width	Up to 600 mm
Finish	2B, BA, No.4, Mirror
Form	Coils, Sheets, Custom Cut Length

Chemical Composition (%)

Element	Content
Chromium (Cr)	22.0 – 24.0%
Nickel (Ni)	12.0 – 15.0%
Carbon (C)	≤ 0.20%
Manganese (Mn)	≤ 2.0%
Silicon (Si)	≤ 1.0%
Phosphorus (P)	≤ 0.045%
Sulfur (S)	≤ 0.030%
Iron (Fe)	Balance

Mechanical Properties

Property	Value
Tensile Strength	≥ 620 MPa
Yield Strength (0.2% offset)	≥ 310 MPa
Elongation	≥ 40%
Hardness	≤ 95 HRB

Dimension Chart

Thickness (mm)	Width (mm)	Form
0.05	Up to 600	Coil / Sheet
0.10	Up to 600	Coil / Sheet
0.50	Up to 600	Sheet / Custom
1.00	Up to 600	Sheet / Coil
2.00	Up to 600	Sheet

Equivalent Grades

Standard	Equivalent Grade
EN	1.4828
JIS	SUS 309S
UNS	S30908
BS	309S24

Equivalent Standards

Standard	Description
ASTM A240	Standard for Chromium and Chromium-Nickel SS Plate, Sheet, and Strip
ASME SA240	ASME equivalent to ASTM A240

Other Types of Stainless Steel Shims

Grade	Application / Feature
SS 304	Most commonly used, general corrosion resistance
SS 304L	Low carbon for better weldability
SS 316	Marine and chemical applications
SS 310	High temperature strength, oxidizing environments
SS 321	Stabilized for high temperature welding

We also serve western and central India’s rapidly growing industrial zones such as Nashik, Kolhapur, Chandrapur, Akola, Vilayat, Somnath, Dahej, Ankleshwar, Navsari, Valsad, Rajpipla, and Narmada, where our products are used in power plants, oil refineries, pressure vessels, and industrial furnaces. Our ability to offer both bulk and small-batch solutions sets us apart from generic suppliers.

Frequently Asked Questions (FAQs)

Q1: What is the temperature resistance of 309 Stainless Steel Shim?

A1: SS 309 shims can withstand temperatures up to 980–1100°C, making them ideal for high-heat environments.

Q2: Can Riddhi Siddhi Impex provide cut-to-size 309 SS Shim?

A2: Yes, we offer complete customization including cut-to-size lengths, thickness, and surface finishes.

Q3: What industries use 309 Stainless Steel Shims?

A3: Common industries include thermal processing, furnaces, petrochemicals, refineries, and power generation.

Q4: Are your products supplied pan-India?

A4: Absolutely. We supply across all major Indian cities including Mumbai, Delhi, Chennai, Bengaluru, Ahmedabad, and more.