Precision Stainless Steel Strip

Precision Stainless Steel Strip: The Complete FAQ Guide

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What Is Precision Stainless Steel Strip?

precision stainless steel strip

Precision stainless steel strip is a cold rolled strip made from high quality stainless steel coil.

The most common grades are 201, 301, 304 and 316L. The strip may be uncoated or coated with a surface finish that enhances its corrosion resistance properties. It is available in thicknesses from 0.02mm to 3.0mm.

Precision stainless steel strip has excellent mechanical properties at room temperature and can be readily fabricated into parts by machining processes such as turning and drilling. It is also weldable by conventional methods, although welding must be done carefully because of the low melting point of the material.

Precision stainless steel strip is used by manufacturers in industries such as aerospace, automotive, marine, oil and gas, petrochemical, food processing and medical equipment.

Precision stainless steel strip can be manufactured in different grades depending on the desired characteristics of the final product. For example, grade 304 precision stainless steel strip is more resistant to corrosion than grade 321 precision stainless steel strip but both types are still suitable for use in marine environments since they will not rust or corrode over time.

What Are The Characteristics Of Precision Stainless Steel Strip?

Characteristics of precision stainless steel strip:

  1. High precision: the thickness and width of the strip are very accurate, you can get a better result when using it.
  2. Good surface quality: the surface of the strip is very bright, no rust, no scratches.
  3. Good mechanical properties: precision stainless steel strip has good mechanical properties in all directions.
  4. Flatness: after a long period of rolling and flattening, the precision stainless steel strip is flat and has no bumps or scratches on the surface.
  5. Hardness control: our factory can also meet customer requirements for different hardness.

What Are The Chemical Compositions Of Precision Stainless Steel Strip?

Stainless Steel Chemical Composition(%)
GradeC, ≤Mn, ≤P, ≤S, ≤Si, ≤CrNiMoN, ≤Other Elements, ≤
3040.08 2.00 0.05 0.03 1.00 18.0-20.08.0-11.0
304L0.03 2.00 0.05 0.03 1.00 18.0-20.08.0-12.0
316L0.03 2.00 0.05 0.03 1.00 16.0-18.010.0-14.02.00-3.00
3210.08 2.00 0.05 0.03 1.00 17.0-19.09.0-12.00.10 ≥ Ti 5×(C+N), ≤ 0.70
2010.15 5.50-7.500.06 0.03 1.00 16.0-18.03.5-5.50.25
2020.15 7.50-10.000.06 0.03 1.00 17.0-19.04.0-6.00.25
3010.15 2.00 0.05 0.03 1.00 16.0-18.06.0-8.00.10
309S0.08 2.00 0.05 0.03 1.00 22.0-24.012.0-15.0
310S0.08 2.00 0.05 0.03 1.50 24.0-26.019.0-22.0
316Ti0.08 2.00 0.05 0.03 1.00 16.0-18.010.0-14.02.00-3.000.10 ≥ Ti 5 × (C + N), ≤0.70
317L0.03 2.00 0.05 0.03 0.75 18.0-20.011.0-15.03.0-4.00.10
3210.08 2.00 0.05 0.03 1.00 17.0-19.09.0-12.00.10 ≥ Ti 5 × (C + N), ≤ 0.70
3470.08 2.00 0.05 0.03 1.00 17.0-19.09.0-12.0≥ Cb 10 × C, ≤ 1.00
22050.03 2.00 0.03 0.02 1.00 22.0-23.04.5-6.53.0-3.50.14-0.20
23040.03 2.50 0.04 0.03 1.00 21.5-24.53.0-5.50.05-0.600.05-0.60
25070.03 1.20 0.04 0.02 0.80 24.0-26.06.0-8.03.0-5.00.24-0.32Cu ≤0.50
410S0.08 1.00 0.04 0.03 1.00 11.5-13.50.60
4300.12 1.00 0.04 0.03 1.00 16.0-18.0
4340.12 1.00 0.04 0.03 1.00 16.0-18.00.75-1.25
440A0.60-0.751.00 0.04 0.03 1.00 16.0-18.0≤0.75
440B0.75-0.951.00 0.04 0.03 1.00 16.0-18.0≤0.75
440C0.95-1.201.00 0.04 0.03 1.00 16.0-18.0≤0.75
4440.03 1.00 0.04 0.03 1.00 17.5-19.51.00 1.75-2.500.04 Ti+Cb 0.20+4 × (C+N)-0.80
904L0.02 2.00 0.05 0.04 1.00 19.0-23.023.0-28.04.00-5.000.10 Cu 1.00-2.00
PH 13-8Mo0.05 0.20 0.01 0.01 0.10 12.25-13.257.5-8.5
15-5 PH0.07 1.00 0.04 0.03 1.00 14.0-15.53.5-5.52.5-4.5 Cu; 0.15-0.45 Nb
17-4 PH0.07 1.00 0.04 0.03 1.00 15.5-17.53.0-5.03.0-5.0 Cu; 0.15-0.45 Nb
17-7 PH0.09 1.00 0.04 0.04 1.00 16.0-18.06.5-7.750.75-1.5 Al

From this file, you can learn more about all grades stainless steel strips chemical compositions.

What Are The Mechanical Properties Of Precision Stainless Steel Strip?

GradeStandard
Yield Strength
Rp0.2 (N/mm²)
Tensile Strength
Rm (N/mm²)
Elongation %

Hardness
(HV)
Hardness
(HRB)
201ASTM A240
≥ 275
≥ 520
≥ 35
≤ 260
≤ 101
202ASTM A240
≥ 275≥ 520≥ 40≤ 218
≤ 95
301ASTM A240
≥ 205≥ 520≥ 40≤ 200≤ 90
304ASTM A240
≥ 205≥ 515
≥ 40≤ 210
≤ 92
304LASTM A240
≥ 205≥ 520
≥ 40≤ 200
≤ 90
316L
ASTM A240
≥ 177≥ 480
≥ 40≤ 200
≤ 90
316Ti
ASTM A240
≥ 205≥ 520
≥ 40≤ 200
≤ 90
317L
ASTM A240
≥ 205≥ 515
≥ 40≤ 218
≤ 95
309S
ASTM A240
≥ 205≥ 515≥ 40≤ 218≤ 95
310S
ASTM A240
≥ 205≥ 520
≥ 40≤ 200
≤ 90
321
ASTM A240
≥ 205≥ 520
≥ 40≤ 200
≤ 90
347
ASTM A240
≥ 205≥ 520
≥ 35≤ 200≤ 90
410S
ASTM A240
≥ 205≥ 440
≥ 20≤ 210
≤ 92
420J2
ASTM A240
≥ 225≥ 540
≥ 18≤ 180
≤ 80
430
ASTM A240
≥ 206≥ 450
≥ 22≤ 200
≤ 88
2205
ASTM A240
≥ 450≥ 620
≥ 25≤ 293
≤ 30
2507
ASTM A240
≥ 450≥ 620
≥ 25≤ 290
≤ 30
253 MA®ASTM
≥ 310≥ 600
≥ 40≤ 217
≤ 95
254 SMO®ASTM
≥ 300≥ 650
≥ 35≤ 223
≤ 96
654 SMO®ASTM
≥ 430≥ 750
≥ 40≤ 250
≤ 100
904L
ASTM
≥ 216≥ 490
≥ 35-
≤ 90
UNS N08926ASTM
≥ 295≥ 650
≥ 35-
≤ 100
UNS S17400ASTM≥ 725≥ 930
≥ 10-
-

In What Applications Is Precision Stainless Steel Strip Used?

Precision stainless steel strip can be used in many different applications. It is a highly versatile product that has a wide range of uses.

The aerospace industry uses precision stainless steel strip to make metal tubing that’s used to build aircrafts.

Electronics manufacturers rely on precision stainless steel strip for making electrical components such as capacitors and relays. These parts are essential to modern electronics, which would not function without them.

Precision stainless steel strip is commonly used in the food industry, where it is often used to create cooking utensils such as pots and pans. It is also sometimes used for other types of cookware, including casserole dishes and baking pans.

The alloy of precision stainless steel strip also makes it an ideal material for use in the medical industry. It is often used to create surgical instruments such as scalpels, hypodermic needles and clamps.

Precision stainless steel strip can also be used in the heat exchanger industry. There are many grades of stainless steel for heat exchanger finned tube production, such as 304 stainless steel strip, 304L stainless steel strip, 2205 stainless steel strip.

How To Produce One Roll Precision Stainless Steel Strip?

  1. Technical Analysis
  2. Raw Material Preparation
  3. Rolling And Bright Annealing Process
  4. Degrease Cleaning Process
  5. Tension Straightening Process
  6. Slitting Process
  7. Inspection Process
  8. Packaging Process

Stainless Steel Precision Strip Production Tolerance

Stainless steel precision strip production tolerance is based on ASTM A240, GB/T4237, JIS G4305 standards.The thickness and width of the stainless steel precision strip are manufactured to meet the customer requirements.

The tolerance of stainless steel precision strip is also one of the main factors to consider.

The tolerance level is divided into three grades: JIS G4313 A class (tolerance ≤ ± 0.03mm), B class (tolerance ≤ ± 0.05mm), C class (tolerance ≤ ± 0.08mm).

The production tolerance of stainless steel precision strip produced by our HZW is better than that of similar products in China, and can reach grade A in JIS G4313 standard.

In addition, the thickness tolerance of stainless steel precision strip should also be considered:

The thickness tolerance of 1/2H (1/2 hard) and 3/4H (3/4 hard) material is +0.005mm or -0.005mm.

The thickness tolerance of full hard and super hard material is +0.001mm or -0.001mm.

Stainless Steel Precision Strip Hardness

Stainless steel precision strip hardness is one of the most important properties of a material and is used to characterize its resistance to plastic deformation. Hardness is defined as the resistance of a material to localized deformation, such as indentation, scratching, cutting or bending.

The hardness of stainless steel precision strip has a direct impact on its yield strength, tensile strength, elongation, deformation resistance, wear resistance and corrosion resistance.

In addition to the mechanical properties of stainless steel precision strip products, it is also one of the basic technical indexes for judging whether the product quality meets the requirements. Therefore, it is necessary to strictly control the hardness of stainless steel precision strip in production.

Stainless steel precision strip hardness is an important mechanical property of stainless steel precision strip, which is widely used in the manufacture of stainless steel strips.

The hardness of stainless steel precision strip can be expressed by the following two methods:

  • Rockwell hardness (HRC)
  • Vickers hardness (HV)

Stainless steel precision strip hardness shall be divided into soft, half-hard and hard types according to the different heat treatment processes. The main purpose is to distinguish the degree of cold processing after the raw material is delivered to the production line.

1. Soft: Commonly known as 1/4H or 2D, refers to the state after annealing or cold rolling with a large reduction ratio and no intermediate annealing.

2. Half hard: Commonly known as 1/2H or 2B, refers to the state after cold rolling with a small reduction ratio and no intermediate annealing.

3. Hard: Commonly known as 3/4H or 3B, refers to the state after heat treatment with high hardness, commonly known as hard state.

4. Full Hard: Commonly known as FH, and hardness will be from 430HV to 490HV.

5. Extra Hard: Commonly known as EH, and hardness will be from 490HV to 550HV.

6. Super Hard: Commonly known as SH, and hardness will be from 550HV to 650HV.

Stainless Steel Precision Strip Production Standard

Stainless steel precision strip is made by cold rolled on the stainless steel. Through cold rolling, the thickness accuracy and surface finish of steel strip are improved, and hardness is increased.

Stainless steel precision strip is mainly used for deep drawing, bending and forming a process which needs high formability and thus extra-smooth surfaces.

There are many countries have different standards for stainless steel precision strip, such as Japan JIS standard, German DIN standard, British BS standard, American ASTM standard, ASME standard, China G/BT and so on.

What Is Precision Stainless Steel Strip Surface Finish?

Stainless steel strip surface finish is one of the most important factors in determining the quality of stainless steel products. In the process of manufacturing and processing, the surface quality of stainless steel strip is affected by many factors, such as polishing equipment, polishing media, polishing time and other parameters.

Surface finish of a steel strip refers to the degree of smoothness and uniformity of the surface of a steel strip. The surface roughness is mainly caused by the action of two factors, namely, the material itself and the processing equipment.

The material refers to the inherent physical properties of the material itself such as topography and porosity. Processing equipment refers to processing equipment such as polishing machine, grinding machine, rolling mill and so on. The same material and processing equipment will give different surface roughness values depending on their working conditions and operating methods.

The surface finish of stainless steel strip is mainly divided into three categories: TR bright (bright), BA mirror (mirror) and 2H satin (satin). The mirror surface has a bright luster without any reflection spots, while the satin surface has a mottled light appearance with an even degree of brightness.

What Are Stainless Steel Strips Packaging?

Our HZW team have professional team who can adopt developed packaging technology to assure no any damages of precision stainless steel strips products during transportation.

Standard export packaging: Waterproof Paper Winding+PVC Film+Strap Banding+Wooden Pallet or Wooden Case;

Customized packaging as your request (Logo or other contents accepted to be printed on the packaging);

Other special packaging will be designed as customer’s request;
Eye to wall and eye to sky are both available;

By International Express: DHL/UPS/FEDEX/EMS and our own express line;

By air or By sea;

Shipping port: Shanghai, Ningbo or as your request.

How To Choose The Right Precision Stainless Steel Strip Supplier From China?

Choosing the right supplier from China is one of the most important decisions you can make.

The wrong supplier can cause your business to lose money and be late on delivery dates.

Precision stainless steel strip is the most common material used in the industry. It is also known as high-end steel strip, which is a kind of anti-corrosion stainless steel strip. As a result, it has high wear resistance and good corrosion resistance. Therefore, this kind of material is very popular in various industries such as aviation, medical and other fields.

There are many suppliers in China that produce high quality precision stainless steel strips. However, not all of them can meet your requirements on both quality and price. Therefore, it is important for you to find the right one for yourself based on your needs and budget.

In order to get high quality precision stainless steel strips at affordable prices from China, there are some tips that you can follow:

1) Make sure that the supplier has professional experience in manufacturing precision stainless steel strip product;

2) Check their machinery and equipment line;

3) Ask them about their production capacity;

4) Check out if they have any certificates or awards related to their products.

Which Grade Precision Stainless Steel Strip You Can Offer?

Stainless steel is a broad term used to describe a variety of steels and alloys that have corrosion resistance. The corrosion resistance is due to the formation of a thin film of chromium oxide on the surface of the metal. In general, the more chromium present in the alloy, the better its corrosion resistance.

The following are some of the most common stainless steels strips grades.

Austenitic Stainless Steel

Austenitic stainless steels are more resistant to corrosion than other classes because of their high nickel content. They are magnetic, making them harder to machine than nonmagnetic grades, but they can be easily welded with no preheat required. Examples include 321, 301, 304/304L or 316/316L stainless steel grades.

Ferritic Stainless Steel

Ferritic stainless steels have improved strength compared to 300 series grades because their higher carbon content makes them more resistant to plastic deformation at elevated temperatures. Examples include 410S and 443 grade.

Martensitic Stainless Steel

Martensitic stainless steels are non-magnetic, high carbon and alloyed steels that can be hardened by heat treatment.

This treatment is called austenitising and it produces a body-centered cubic structure that is very hard, but also brittle. To make these materials tough again after this process, they must be quenched in water or oil at high temperatures.

The quenching process causes martensite to transform into a modified face-centered cubic structure called martensite. This modification makes these materials more ductile and less brittle than austenitic stainless steels.

Martensite stainless steel grades include:

Duplex Stainless Steel

Duplex stainless steels contain a mixture of austenite and ferrite in their structure, achieving better strength than either ferritic or austenitic steels.

As a result, duplex stainless steels display properties characteristic of both austenitic and ferritic stainless steels.

This combination of properties can mean some compromise when compared with pure austenitic and pure ferritic grades. Duplex stainless steel grades are extremely corrosion resistant, work hardenable alloys.

Duplex stainless steel grades have high chromium (19–32%) and molybdenum (up to 5%) and lower nickel contents than austenitic stainless steels.

The most used duplex stainless steel grades are the 2205 (22% Chromium, 5% Nickel) and the 2507 (25% Chromium, 7% Nickel); 2507 is known as super duplex due to its higher resistance to corrosion.

Super Austenitic Stainless Steel

Like the austenitic stainless steels, the superaustenitic stainless steels are highly ductile; they have excellent toughness, high strength, outstanding corrosion resistance, good weldability, and excellent formability.

254SMO is the most common so-called super austenitic stainless steel. The high molybdenum content helps it achieve a PREN of 43, compared with just 25 of Alloy 316L strip.

Alloy strip 654SMO contains nearly 8% molybdenum which pushes its PREN to 54.

Some researchers consider stainless steel strip 904L (UNS N08904, 1.4539) a super austenitic stainless steel too, although it lies somewhere between a nickel-based alloy and stainless steel, with 25% nickel and 20% chromium. Such is the raised alloy content of these grades that many of their historical applications have been substituted by duplex and super duplex stainless steels.