sa 240 304h
304 stainless steel fasteners
Gangsteel produce ASTM A240 304 Stainless steel plates, S30400, A240 Type 304 Stainless steel cutting parts by water cutting, laser cutting and cnc cutting. ASTM a240 (chromium and chromium nickel stainless steel plate, sheet, and strip for pressure essels and general applications. a240 304 stainless steel is a common material in stainless steel with a density of 7.93g/cm3, which is also called 18 / 8 stainless steel in the industry. High temperature resistant 800 ��, with good processing performance and high toughness, it is widely used in industry, furniture decoration industry and food and medical industry.
304l plate
Stainless steel 304 Fasteners is likely one of the highly used grades of stainless-steel. Stainless steel 304 fasteners are an austenitic chromium nickel stainless-steel. These are used in steel pickling, acid leach mining applications and other such industries. It has excellent A240-304 stainless steel plates corrosion resistance, durability and mechanical potency. Solid chrome steel fasteners can be found in a number of alloy varieties. The properties of the alloys used to fabricate our fasteners are shown in the “Chemical & Physical Properties Chart” .
- The term “18-eight” is usually used to designate merchandise created from 300 collection stainless.
- Cold working the alloy also conveys good tensile strength and hardness to these fasteners, although it turns into slightly magnetic.
- This “18-eight” name out is referring to the 18% chromium/8% nickel alloy mixture of the steel.
- Nickel, when added in a considerable mixture or this instance shut to 8% of its complete weight, improves the corrosion resistance properties.
- In austenitic stainless-steel alloys corresponding to SS 304 bolts and nuts, nickel tends to kind austenite.
- “18-eight” just isn’t an actual specification, as it solely refers to two completely different alloys in the metal.
06cr19ni10 and SUS304 are the common marking methods on the market, among which 06cr19ni10 generally refers to national standard production, 304 generally refers to ASTM standard production, and SUS 304 refers to Japanese standard production.
304 is a kind of universal stainless steel, which is widely used to make equipment and parts with good comprehensive performance (corrosion resistance and formability). In order to maintain the inherent corrosion resistance of stainless steel, the steel must contain more than 18% chromium and more than 8% nickel. The stainless steel is produced according to ASTM 304.
In cases of modification in its carbon content, alloy 304 could possibly be dual certified as 304L or 304H, depending on its lowered or increased carbon content. 304 stainless steel is one of the most widely and generally used stainless steel grades. It is also referred to as the chromium nickel grade by the SS 304 Nut Bolt Manufacturer. Besides being versatile, type 304 stainless steel fasteners provide an economical various to different chrome steel. This grade of fasteners is economical on account of the chrome steel having good corrosion resistance properties in direction of a broad spectrum of common and localized corrosive media.
Nickel, when added in a substantial combination or this occasion close to 8% of its complete weight, improves the corrosion resistance properties. In austenitic chrome steel alloys such as SS 304 bolts and nuts, nickel tends to kind austenite. Cold working the alloy also conveys good tensile energy and hardness to these fasteners, although it becomes barely magnetic. The time period “18-8” is commonly used to designate merchandise created from 300 sequence stainless.
Product standard a240 304 stainless steel:For a240 304 stainless steel, the Ni element in its composition is very important, which directly determines the corrosion resistance of 304 stainless steel and its value.The most important elements in 304 are Ni and Cr, but they are not limited to these two elements. Specific requirements are specified by product standards. It is considered that 304 stainless steel can be considered as long as Ni content is more than 8% and Cr content is more than 18%. This is why the industry will call this kind of stainless steel 18 / 8 stainless steel. In fact, the relevant product standards have very clear provisions for 304, and these product standards have some differences for different shapes of stainless steel. Here are some common product standards and tests.
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The 304 ss bolts are thoroughly pliable & the execution of any forming steps are affordable. Production of ss 304 fasteners such as UNS S30400 Nuts, Washer, Stud Bolts, Bolts, screws, Hex Bolt, Threaded Rod, and Nut Bolts might use requirements or specs set by regulatory our bodies just like the ASTM. One such specification that covers 304 stainless-steel bolt for top-temperature use is the ASTM A193. Under this specification, the ASTM A stud bolts are to conform to the chemistry. Hence, the inclusion of an unspecified content material to their steel is restricted. Other than being recognized for its corrosion resistance properties, the SS 304 Fastenershave good toughness and hardness properties.
The high content material of chromium in the alloy is what supplies resistance to the SS 304 Nut Bolt from oxidizing solutions such as nitric acid as much as fifty five% weight even to a temperature of about 176°F. However, in applications that include extremely reducing environments corresponding to these chlorides and sulfuric acid, these fasteners exhibit poor efficiency. Although SS 304 Nuts and bolts don’t have distinctive corrosion resistance properties, their choice is for several causes. Firstly, grade 304 screws are inexpensive as compared to other stainless steels. Second, they’re an enchancment over carbon steels. S30400 bolts can be found easily in comparison to many alloy grades.
304 stainless steel uses
|
Product Type |
A 240 304 Sheet, A 240 304 Plate |
|
SS 304 ASTM Standard Specification |
ASTM A240 / ASME SA240 |
|
Thickness |
0.1 to 3000 mm Thk |
|
Width |
10-2500mm |
|
Length |
2m, 2.44m, 3m, or as required |
|
Finish |
2B, 2D, BA NO (8), Cold rolled sheet (CR), Hot rolled plate (HR), SATIN (Met with Plastic Coated), No.1 finish hot rolled, 1D, 2B, No.4, BA, 8K, satin, hairline, brush, mirror etc. |
|
Hardness |
Half Hard, Soft, Hard, Quarter Hard, Spring Hard |
|
Form |
Sheet, Plate, Strip, Flats, Clad Plate, Coils, Foils, Plain Sheet, Flat Shim, Flat Sheet, Shim Sheet, Rolling Sheet, Rolling Plate, Rolls, Blank (Circle), soft annealed, descaled, tread plate, sheared, annealed, Checker Plate |
A240 304 Stainless Application scope
System description: A240 304 stainless steel is the most widely used chromium-nickel stainless steel. As a widely used steel, it has good corrosion resistance, heat resistance, low temperature strength and mechanical properties; it has good hot workability such as stamping and bending.
, No heat treatment hardening phenomenon (use temperature -196℃～800℃).
Corrosion resistant in the atmosphere, if it is an industrial atmosphere or heavily polluted areas, it needs to be cleaned in time to avoid corrosion.
It is suitable for food processing, storage and transportation.
Has good processing properties and weldability.
Plate heat exchangers, bellows, household products (category 1, 2 tableware, cabinets, indoor pipelines, water heaters, boilers, bathtubs), auto parts (windshield wipers, mufflers, molded products), medical appliances, building materials, chemicals, food industry
, Agriculture, ship parts, etc.
304 stainless steel is a nationally recognized food grade stainless steel.
A 240 Gr 304 Mechanical Properties
| Grade |
ASME SA240 304 Mechanical Strength |
||||
|
Yield |
Tensile |
Elongation |
Hardness, max |
||
|
ASME SA240 304 |
Min Mpa |
Mpa |
Min % |
Brinell |
Rockwell B |
|
205 |
515 |
40% |
201 |
92 |
|
|
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|
|
|
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A 240 Gr 304 Chemical Composition
| Plate Grade |
The Element Maximum (%) |
||||||
|
C |
Mn |
P |
S |
Si |
Cr |
Ni |
|
|
ASME SA240 304 |
0.08 |
2.00 |
0.045 |
0.030 |
0.75 |
18.0-20.0 |
8.0-10.5 |
|
Mo |
N |
Cu |
|
|
|
|
|
|
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0.10 |
|
|
|
|
|
|
For a240 304 stainless steel, the Ni element in its composition is very important, which directly determines the corrosion resistance and value of 304 stainless steel.
The most important elements in 304 are Ni and Cr, but they are not limited to these two elements.
Specific requirements are stipulated by product standards.
The common judgment in the industry is that as long as the Ni content is greater than 8% and the Cr content is greater than 18%, it can be considered as 304 stainless steel.
This is why the industry calls this type of stainless steel 18/8 stainless steel.
In fact, the relevant product standards have very clear regulations on 304, and these product standards have some differences for different shapes of stainless steel.
Below are some common product standards and tests.
ASTM A240 Equivalent AISI 304 stainless steel sheet
|
a 240 gr |
JIS G4304 |
ASTM |
UNS |
KS |
EN 10095 |
AS |
CNS |
|
a 240 gr 201 |
SUS201 |
201 |
S20100 |
STS201 |
1.4372 |
201-2 |
201 |
|
a 240 gr 202 |
SUS202 |
202 |
S20200 |
STS202 |
1.4373 |
– |
202 |
|
a 240 gr 301 |
SUS301 |
301 |
S30100 |
STS301 |
1.4319 |
301 |
301 |
|
a 240 gr 304 |
SUS304 |
304 |
S30400 |
STS304 |
1.4301 |
304 |
304 |
|
a 240 gr 304L |
SUS304L |
304L |
S30403 |
STS304L |
1.4306 |
304L |
304L |
|
a 240 gr 304N |
SUS304N1 |
304N |
S30451 |
STS304N1 |
1.4315 |
304N1 |
304N1 |
|
a 240 gr XM21 |
SUS304N2 |
XM21 |
S30452 |
STS304N2 |
– |
304N2 |
304N2 |
|
a 240 gr 304LN |
SUS304LN |
304LN |
S30453 |
STS304LN |
– |
304LN |
304LN |
A240 304 stainless steel plate property requirement.
Tensile strength σb (MPa)≥515-1035
Conditional yield strength σ0.2 (MPa)≥205
Elongation δ5 (%)≥40
Reduction of area ψ (%)≥?
Hardness: ≤201HBW; ≤92HRB; ≤210HV
Density (20℃, g/cm³): 7.93
Melting point (℃): 1398~1454
Specific heat capacity (0~100℃, KJ·kg-1K-1): 0.50
ASTM / AISI/ SAE, DIN, Werkstoff grades or equivalents:
|
ASTM |
BS 970 1991 |
AISI / SAE |
Werkstoff |
|
A240 SS 304L |
304S11 |
304L |
1.4306 |
|
A240 SS 304 |
304S15 |
304 |
1.4301 |
|
A240 SS 316L |
316S11 |
316L |
1.4404 |
|
A240 SS 316L |
316S13 |
316L |
1.4435 |
|
A240 SS 316 |
316S31 |
316 |
1.4401 |
|
A240 SS 316 |
316S33 |
316 |
1.4436 |
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304 Grade Stainless metal screws are the largely used grade for the production of screws. This has glorious power, corrosion resistance and also material ability. 304 stainless threaded rod is the one which is principally applied in the industries like aerospace, food and beverage, equipment, architecture and lot more. These rods may be stress relieved at 450 degree C – 600 Degree C for 1 hour with somewhat danger of sensitization. Stainless Steel Washers Fasteners Washers are commonly used under the heads of bolts and screws and they are used underneath nuts as properly. The commonest sort of washers is the Flat Washers, where it is used to extend the bearing areas of the top, and defend the material finish throughout assembly.
In the fastener world, most stainless steel is austenitic chrome steel, commonly known as the 300 collection. While there are lots of compositions that fall beneath the 300 series, we mostly use sorts 304 and 316. While they each present wonderful corrosion resistance and have related compositions, their variations lie within the ratio of chromium to nickel and the environments they are utilized in.
ss 304 matte finish
The 316 chrome steel fastener series contains slightly more nickel than the 304 sequence, as well as 2-3% molybdenum. This provides these fasteners much better ranges of resistance to corrosion than the 304 series. These fasteners are ideal of use the place there is exposure to chemicals and other forms of corrosive products corresponding to chloride which tends to trigger pitting. There is very little overall distinction in corrosion resistance amongst these 18-eight series varieties. They do, however, characteristic slight differences when it comes to their chemical composition, making some grades more resistant than others in opposition to particular chemical substances or atmospheres. This fastener sequence has superior corrosion resistance and is usually non-magnetic. The 304 stainless steel fasteners series is made up of approximately 18% chromium and 8% nickel (18-8).
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In order to determine whether a material is 304 stainless steel, it must meet the requirements of each element in the product standard. As long as one does not meet the requirements, it cannot be called 304 stainless steel. Gangsteel produce A240 304 Stainless steel plate, if you have requirement for stainless steel plate, please feel free to contact us by admin@gangsteel.com