Manufacturer, Supplier & Exporter of Duplex Stainless Steel Shim (2205, 2507)

Duplex Stainless Steel Shim (2205, 2507) is a premium-grade material widely recognized for its exceptional strength and corrosion resistance. These shims are made from duplex stainless steels, which combine the properties of both austenitic and ferritic stainless steels, offering improved toughness, excellent resistance to stress corrosion cracking, and superior pitting resistance in chloride-rich environments. Grade 2205 (UNS S32205/S31803) is the most widely used duplex stainless steel, while 2507 (UNS S32750/S32760) is a super duplex variant known for its enhanced performance in aggressive and marine conditions.

Riddhi Siddhi Impex, based in Mumbai, is a trusted manufacturer and supplier of Duplex Stainless Steel Shims in grades 2205 and 2507. The company is known for its strong expertise in supplying precision-engineered shims, foils, and strips, tailored to customer requirements. With advanced slitting and cut-to-length machines, they can produce shims in various thicknesses ranging from 0.03 mm and above, ensuring tight tolerances, excellent flatness, and consistent surface finish. Riddhi Siddhi Impex sources raw materials from certified mills and adheres to international quality standards, offering third-party inspection and test certifications on request.

These duplex stainless steel shims are ideal for demanding applications in industries such as oil and gas, chemical processing, desalination plants, offshore platforms, and marine engineering. Thanks to their high chromium, molybdenum, and nitrogen content, 2205 and 2507 offer excellent resistance to localized corrosion like pitting and crevice corrosion. In addition to strength and corrosion resistance, these shims offer good weldability and fatigue strength, making them suitable for high-performance and safety-critical environments.

Riddhi Siddhi Impex serves as a Duplex Stainless Steel Shim (2205, 2507) domestic supplier across all major Indian cities. Their distribution network and logistics capabilities ensure smooth and timely delivery to metros such as Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, and Surat. With a strong supply base in Maharashtra and Gujarat, they also cater to nearby industrial regions like Vadodara, Rajkot, Nashik, and Nagpur, providing a competitive edge in terms of logistics efficiency and customer support.

Beyond the metros, Riddhi Siddhi Impex also supplies to tier-2 and tier-3 cities with growing industrial demand such as Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, and Chandigarh. Their reach extends further to the southern and eastern cities like Mysuru (Mysore), Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Madurai, Kochi, Thiruvananthapuram, and Mangalore. In western India, industrial belts such as Chandrapur, Akola, Kolhapur, Dahej, Vilayat, Somnath, Narmada, Ankleshwar, Navsari, Valsad, and Rajpipla are also part of their service regions

Duplex Stainless Steel Shim (2205, 2507)

Specifications

Grade	2205 / 2507 Duplex Stainless Steel
Type	Duplex / Super Duplex
Standard	ASTM A240 / UNS S32205 / S32750
Finish	2B, No.4, Bright Annealed, Custom
Form	Shims, Foils, Strips, Sheets
Thickness Range	0.03 mm – 3 mm
Width	Up to 1500 mm
Length	Custom / Coil / Sheet form

Chemical Composition (% by weight)

Element	2205 (%)	2507 (%)
Chromium (Cr)	22.0–23.0	24.0–26.0
Nickel (Ni)	4.5–6.5	6.0–8.0
Molybdenum (Mo)	3.0–3.5	3.0–5.0
Nitrogen (N)	0.14–0.20	0.24–0.32
Carbon (C)	≤ 0.030	≤ 0.030
Manganese (Mn)	≤ 2.0	≤ 1.2
Silicon (Si)	≤ 1.0	≤ 0.80
Phosphorus (P)	≤ 0.030	≤ 0.035
Sulfur (S)	≤ 0.020	≤ 0.020
Iron (Fe)	Balance	Balance

Mechanical Properties

Property	2205	2507
Tensile Strength	620 MPa min	800 MPa min
Yield Strength (0.2%)	450 MPa min	550 MPa min
Elongation	≥ 25%	≥ 15%
Hardness (Brinell)	≤ 293 HB	≤ 310 HB

Dimension Chart (Standard Range)

Thickness (mm)	Width (mm)	Length
0.03 – 0.10	Up to 1000	Custom / Coil
0.11 – 1.00	Up to 1250	Custom / Sheet
1.01 – 3.00	Up to 1500	Sheet or Strip

Equivalent Grades

Standard	2205	2507
UNS	S32205 / S31803	S32750 / S32760
EN	1.4462	1.4410
JIS	SUS 329J3L	SUS 329J4L
Werkstoff	1.4462	1.4410

Equivalent Standards

Region	Standard
USA	ASTM A240, A789, A790
Europe	EN 10088-2
Japan	JIS G4304 / G4305
India	IS 6911

Other Stainless Steel Shim Types

Grade	Type	Application
304	Austenitic	General Purpose, Food Processing
316	Austenitic	Marine, Chemical Equipment
430	Ferritic	Magnetic, Appliances, Decorative
410	Martensitic	Wear Resistance, Tools

Riddhi Siddhi Impex maintains an efficient inventory of duplex and super duplex materials, which allows them to respond quickly to urgent orders and custom specifications. Whether clients require flat strips, slitted coils, punched shims, or precision washers, the company is equipped to deliver tailored solutions. They provide full technical support, including material test reports, origin certificates, and packaging as per client or export norms.

Frequently Asked Questions (FAQs)

Q1: What is the difference between 2205 and 2507 Duplex Stainless Steel Shims?

A1: 2507 is a super duplex steel with higher strength and corrosion resistance compared to 2205, suitable for more aggressive environments.

Q2: Are Duplex Stainless Steel Shims magnetic?

A2: Yes, duplex stainless steels have partial magnetic properties due to their ferritic phase.

Q3: Where can Riddhi Siddhi Impex supply Duplex Stainless Steel Shims in India?

A3: We supply across India including Mumbai, Delhi, Chennai, Hyderabad, Bengaluru, Pune, Ahmedabad, Surat, Vadodara, Rajkot, and more.

Q4: Can the shims be customized in terms of thickness and finish?

A4: Yes, we offer custom thicknesses, surface finishes, and edge conditions as per client specifications.