Manufacturer, Supplier & Exporter of 321 Stainless Steel Shim

Riddhi Siddhi Impex is a reputed manufacturer and domestic supplier of 321 Stainless Steel Shim across India. Known for its superior resistance to intergranular corrosion and high-temperature strength, 321 stainless steel is a titanium-stabilized austenitic alloy ideal for use in environments exposed to heat, pressure, and corrosive elements. Our precision-engineered SS 321 shims are extensively used in industries such as petrochemicals, aerospace, thermal processing, power generation, and chemical manufacturing.

The primary advantage of 321 Stainless Steel Shim lies in its stabilization with titanium, which prevents the formation of chromium carbides during welding and high-temperature exposure. This makes it far more effective than 304 or 316 grades in applications involving continuous or intermittent temperatures between 427°C and 870°C. Riddhi Siddhi Impex offers 321 SS shims in a variety of thicknesses and widths to meet your exacting design and performance requirements.

As a top-tier 321 Stainless Steel Shim domestic supplier, Riddhi Siddhi Impex maintains ready stock and provides custom-cut solutions as per ASTM A240 and ASME SA240 specifications. Our advanced fabrication facilities allow us to supply shims in coil, roll, strip, and sheet form with finishes like 2B, BA, mirror, and No.4. These high-quality shims are suitable for heat exchangers, expansion joints, aircraft exhausts, and furnace parts.

We proudly supply 321 Stainless Steel Shim to industrial hubs like Mumbai, Delhi, Bengaluru, Hyderabad, Chennai, Kolkata, Pune, and Ahmedabad, where demand for high-temperature alloys is on the rise. Our competitive pricing, adherence to international standards, and quick delivery system have earned us trust across a wide spectrum of industries.

For specialized requirements, our SS 321 shims are available in custom dimensions suited for pipe insulation, gasket manufacturing, architectural use, and aerospace engine components. Each batch is accompanied by Mill Test Certificates (MTC), and we offer technical consultation to ensure proper material selection for your application.

321 Stainless Steel Shim

Specifications

Product Name	321 Stainless Steel Shim
Grade	SS 321 / UNS S32100
Standard	ASTM A240 / ASME SA240
Thickness	0.02 mm to 3 mm
Width	Up to 600 mm
Finish	2B, BA, Mirror, Matt, No.4
Form	Strip, Coil, Sheet, Custom-cut

Chemical Composition (%)

Element	Content
Carbon (C)	≤ 0.08
Chromium (Cr)	17.0 – 19.0
Nickel (Ni)	9.0 – 12.0
Titanium (Ti)	≥ 5x(C+N) – ≤ 0.70
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	≥ 515 MPa
Yield Strength (0.2% offset)	≥ 205 MPa
Elongation	≥ 40%
Hardness (HRB)	≤ 95
Density	7.9 g/cm³
Melting Point	1398 – 1446 °C

Dimension Chart

Thickness (mm)	Width (mm)	Available Form
0.02 – 0.10	Up to 600	Coils / Rolls
0.10 – 1.0	Up to 600	Shim Sheets
1.0 – 3.0	Up to 600	Flat Sheets / Custom Cut

Equivalent Grades

Standard	Equivalent Grade
UNS	S32100
WNR	1.4541
EN	X6CrNiTi18-10
JIS	SUS 321
BS	321S31

Equivalent Standards

Organization	Standard
ASTM	A240
ASME	SA240
EN	10088-2
JIS	G4305

Other Stainless Steel Shim Types

Grade	Description
304 / 304L	Excellent corrosion resistance, widely used
316 / 316L	Superior pitting resistance, marine grade
310 / 310S	High temperature resistance
321	Stabilized against intergranular corrosion
202 / 301	High strength and ductility

As a reliable 321 Stainless Steel Shim domestic supplier, Riddhi Siddhi Impex combines decades of experience with advanced manufacturing practices to deliver shims that meet strict industry requirements. With a strong supply chain presence across Nashik, Kolhapur, Chandrapur, Akola, Vilayat, Somnath, Dahej, Ankleshwar, Navsari, Valsad, Narmada, and Rajpipla, we aim to be your one-stop stainless steel solution provide

Frequently Asked Questions (FAQs)

Q1: What is the main advantage of 321 Stainless Steel Shim?

A1: SS 321 is titanium-stabilized and resists carbide precipitation during welding, making it ideal for high-temperature applications.

Q2: Can you provide 321 SS shim in custom thicknesses?

A2: Yes, Riddhi Siddhi Impex offers custom thicknesses and dimensions as per project needs.

Q3: Is 321 SS shim suitable for high-temperature environments?

A3: Absolutely. It is ideal for use in continuous service up to 870°C and intermittent service up to 925°C.

Q4: Where do you supply your stainless steel shims in India?

A4: We supply to all major Indian cities including Mumbai, Delhi, Bengaluru, Chennai, Hyderabad, Surat, Vadodara, and more.