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Stainless Steel Manufacture and Supplier in India

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Stainless Steel

Stainless Steel is a alloy that has been commonly use in different industrial, commercial and engineering applications and is extremely resistant to corrosion. Stainless Steel products from Sachin Steel Centre come in different varieties of stainless steel, including 304, 304L, 316, 316L, 321, 310S, 904L and even Duplex steel pipes, tubes, round bars, sheets, plates, and perforated sheets, etc. Depending on the operating conditions, there are various levels of corrosion resistance, strength and temperature resistance in these materials. Products can be delivered to applicable ASTM, ASME, EN and DIN specifications and come with material traceability and EN 10204 3.1 Inspection certificates. Sachin Steel Centre is a trusted manufacturer and supplier of Stainless Steel in India, providing quality solutions in material for various industrial needs in the domestic and international markets.

Technical Data

Types of Stainless Steel We Provide

Family

Crystalline Structure

Typical Grades

Magnetic (Annealed)

Hardenable by Heat Treatment

Austenitic

Face-Centred Cubic (FCC)

304, 304L, 316, 316L, 321, 347, 310S, 904L

No

No (strengthened by cold work)

Ferritic

Body-Centred Cubic (BCC)

430, 430F, 446

Yes

No

Martensitic

Body-Centred Tetragonal (BCT)

410, 416, 420, 422, 431, 440C

Yes

Yes (quenched and tempered)

Duplex

Mixed Austenite + Ferrite (~50/50)

2205 (S31803 / S32205)

Yes

No

Precipitation-Hardening

Martensitic Matrix with Aged Precipitates

17-4PH (S17400), 15-5PH (S15500)

Yes

Yes (low-temperature thermal ageing)

Chemical Composition of Stainless Steel

Grade

Chromium (Cr)

Nickel (Ni)

Molybdenum (Mo)

Carbon (C max)

Other Elements

304

18.0 to 20.0

8.0 to 10.5

n/a

0.08

n/a

304L

18.0 to 20.0

8.0 to 12.0

n/a

0.030

n/a

316

16.0 to 18.0

10.0 to 14.0

2.00 to 3.00

0.08

n/a

316L

16.0 to 18.0

10.0 to 14.0

2.00 to 3.00

0.030

n/a

321

17.0 to 19.0

9.0 to 12.0

n/a

0.08

Ti 5(C+N) min

310S

24.0 to 26.0

19.0 to 22.0

n/a

0.08

Si 1.50 max

904L

19.0 to 23.0

23.0 to 28.0

4.00 to 5.00

0.020

Cu 1.20 to 2.00, N 0.10 max

430

16.0 to 18.0

0.75 max

n/a

0.12

n/a

410

11.5 to 13.5

0.75 max

n/a

0.15

n/a

420

12.0 to 14.0

0.75 max

n/a

0.15 min

n/a

440C

16.0 to 18.0

0.75 max

0.75 max

0.95 to 1.20

n/a

2205

22.0 to 23.0

4.5 to 6.5

3.00 to 3.50

0.030

N 0.14 to 0.20

17-4PH

15.0 to 17.5

3.0 to 5.0

n/a

0.07

Cu 3.0 to 5.0, Nb 0.15 to 0.45

15-5PH

14.0 to 15.5

3.5 to 5.5

n/a

0.07

Cu 2.5 to 4.5, Nb 0.15 to 0.45

Physical Properties of Stainless Steel

Property

Austenitic (304)

Ferritic (430)

Martensitic (410)

Duplex (2205)

PH Grade (17-4PH)

Density (g/cm³)

8.0

7.7

7.7

7.8

7.8

Elastic Modulus (GPa)

193

200

200

190

196

Mean Thermal Expansion (µm/m·°C, 0 to 100 °C)

17.2

10.4

9.9

13.0

10.8

Thermal Conductivity at 100 °C (W/m·K)

16.2

23.9

24.9

19.0

18.4

Electrical Resistivity (nΩ·m)

720

600

570

800

800

Magnetic Response (Annealed)

Non-Magnetic

Magnetic

Magnetic

Magnetic

Magnetic

Different Grades of Stainless Steel

Grade

UNS

EN / Werkstoff Nr.

Family

Key Feature

Available Product Page Links

303

S30300

1.4305

Austenitic

Free-machining grade (added Sulfur)

303 round bar

304

S30400

1.4301

Austenitic

Industry standard general-purpose grade

304 pipe | 304 bar
304 plate | 304 perforated

304L

S30403

1.4307

Austenitic

Low-carbon 304 preventing weld carbide decay

304L pipe | 304L plate

316

S31600

1.4401

Austenitic

2 to 3% Molybdenum for chloride & acid resistance (See 304 vs 316 stainless steel)

316 pipe | 316 bar
316 perforated

316L

S31603

1.4404

Austenitic

Low-carbon 316 for heavy-wall welded structures

316L pipe | 316L plate

316Ti

S31635

1.4571

Austenitic

Titanium-stabilized 316 for 550°C to 800°C duty

316Ti pipe

310 / 310S

S31000 / S31008

1.4841 / 1.4845

Austenitic

25% Cr / 20% Ni for high-temp oxidation to 1100°C

310 pipe | 310 bar
310 plate

317 / 317L

S31700 / S31703

1.4449 / 1.4438

Austenitic

3 to 4% Molybdenum for severe chemical duty

317L pipe

321

S32100

1.4541

Austenitic

Titanium-stabilized for sustained 425°C to 850°C service

321 pipe | 321 bar
321 plate

347 / 347H

S34700 / S34709

1.4550 / 1.4912

Austenitic

Niobium-stabilized for high-temperature refinery piping

347 pipe

904L

N08904

1.4539

Austenitic (Super)

High Ni (25%), Mo (4.5%), and Cu (1.5%) for sulfuric acid

904L pipe | 904L bar
904L plate

430 / 430F

S43000 / S43020

1.4016 / 1.4104

Ferritic

General-purpose nickel-free ferritic / free-machining

430 bar

446

S44600

1.4749

Ferritic

High-chromium heat-resistant alloy resisting sulfur gas

446 bar

410

S41000

1.4006

Martensitic

Basic 12% Cr hardenable martensitic stainless steel

410 bar

416

S41600

1.4005

Martensitic

Free-machining martensitic grade (up to 30 HRC)

416 bar

420

S42000

1.4021

Martensitic

Higher carbon (0.15% min) for cutlery and pump shafts

420 bar

422

S42200

—

Martensitic

High-strength heat-resistant steel for steam turbines

422 bar

431

S43100

1.4057

Martensitic

High-nickel martensitic grade offering superior toughness

431 bar

440C

S44004

1.4125

Martensitic

High-carbon (1.10%) bearing steel achieving 58 to 60 HRC

440C bar

Duplex 2205

S31803 / S32205

1.4462

Duplex

Higher strength and better chloride stress corrosion resistance

Duplex pipe

Super Duplex 2507

S32750

1.4410

Super Duplex

Very high chloride resistance

Super duplex pipe

17-4PH

S17400

1.4542

Precipitation-hardening

High strength (up to 1300 MPa tensile) via thermal aging

17-4PH bar | 17-4PH plate

15-5PH

S15500

1.4545

Precipitation-hardening

Ferrite-free ESM grade providing high transverse toughness

15-5PH bar

Harmonized System (HSN) Customs Codes of Stainless Steel

Product Type

HSN Heading Code

Description

Flat-Rolled (Width ≥ 600 mm)

7219

Stainless steel sheets, heavy plates, and wide coils

Flat-Rolled (Width < 600 mm)

7220

Stainless steel narrow strip, band, and cold-rolled shims

Hot-Rolled Bars in Coils

7221

Stainless steel wire rod and hot-rolled bar in irregularly wound coils

Bars, Rods, Angles & Shapes

7222

Stainless steel round bars, bright bars, flat bars, angles, and profiles

Stainless Steel Wire

7223

Drawn stainless steel wire and cold-heading wire

Seamless Tubes & Pipes

7304

Stainless steel seamless pipes, tubes, and hollow profiles

Welded Tubes & Pipes

7306

Stainless steel ERW, EFW, and longitudinal welded pipes and tubes

Pipe Fittings & Flanges

7307

Stainless steel butt-weld fittings, forged fittings, and pipe flanges

Applications and Industrial Uses of Stainless Steel

  • Oil and Gas Industry
  • Chemical Processing Plants
  • Food and Beverage Processing
  • Pharmaceutical Manufacturing
  • Power Generation Plants
  • Water Treatment and Desalination Plants
  • Marine and Shipbuilding Industry
  • Automotive and Transportation Industry
Application Industries

Frequently Asked Questions

Stainless steel is an iron-based alloy containing at least 10.5% chromium, which provides corrosion resistance and durability.

Stainless steel is used in piping systems, chemical plants, food processing, pharmaceutical equipment, power generation, construction and marine applications.

SS 304 is a general-purpose stainless steel, while SS 316 contains 2 to 3% molybdenum for improved resistance to chloride-related corrosion.

Yes, stainless steel can rust or corrode under certain conditions, but its chromium-rich passive layer helps protect it from corrosion.

The five main types are austenitic, ferritic, martensitic, duplex and precipitation-hardening stainless steel.

Some stainless steel grades are magnetic, including most ferritic and martensitic grades. Austenitic grades such as SS 304 and SS 316 are generally non-magnetic when annealed but may become slightly magnetic after cold working.

Choose 304 for general and food duty, 316 or 316L for chlorides and mild acids, 321 or 347 for sustained service between about 425 and 850°C, 310S for high temperature oxidation, 904L for sulphuric acid and duplex 2205 where strength and chloride stress corrosion resistance matter. Send us the fluid, temperature and pressure if unsure.

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