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SS304 Stainless Steel Casting Elbow Parts Pipe Fittings Custom Castings Supplier China

SS304 Stainless Steel Casting Elbow Parts Pipe Fittings Custom Castings Supplier China

Brand Name: Non-Standard
Certification: ISO9001
Model Number: Non-Standard
Minimum Order Quantity: 1 Ton
Delivery Time: within 60 days
Payment Terms: T/T, L/C
Zhengzhou Yu-Long Machinery Equipment Co., Ltd.
Verified Supplier
Zhengzhou Henan China
Business type: Manufacturer Exporter Trading Company
Middle of HuaGong Road, High-Tech Zone, Zhengzhou City, Henan Province, China
Supplier`s last login times: within 27 hours

SS304 Stainless Steel Casting Elbow Parts Pipe Fittings Custom Castings Supplier China


Product Description and Process

SS304 Stainless Steel Casting Elbow Parts Pipe Fittings Custom Castings Supplier China


Production process: Silica Sol lost wax investment casting process

Machining process: CNC machine, machining center, lathe, mill machine, drill machine, etc.


Product Material and Uses

Normally produce with ASTM A743/A743M Grade CF8, CF8M, CF3, CF3M, ZG0Cr18Ni10, ZG0Cr18Ni9, ZG0Cr18Ni9Ti, ZG0Cr18Ni12Mo2Ti, ZG1Cr18Ni12Mo2Ti, etc.


POPULAR STAINLESS STEEL GRADES: SS 304 | SS 410 | SS 316 | 17-4

We has experience pouring a wide variety of stainless steel alloy casts. We cast stainless steel from miniature to 50 pounds.

The most common alloys we have poured are listed below. We are also capable of pouring other air melt alloys upon your request. Specific material chemistry and mechanical specifications will be provided to you if needed. For your Stainless Steel Castings needs, we can help you out.


Commonly Cast Stainless Steel Alloys:

Stainless Steel 304(1.4308)

This is the most common stainless steel and is applied in different applications. It consists of at least 18% chromium and 8% nickel and has no magnetic properties within its austenitic structure.

Stainless Steel 304L(1.4309)

Corresponds to stainless steel 304. The ‘L’ stands for ‘low carbon’, so this stainless steel has a lower carbon amount to increase weldability and to limit the corrosion sensitivity after welding.

Stainless Steel 316(1.4408)

A better, but more expensive type of corrosion resistant steel is stainless steel 316. This alloy contains at least 16% chromium, 10% nickel and 2% molybdenum. Because of the addition of molybdenum, this stainless steel type is better defended against salt corrosion and acids, and is often applied in chemical industries.

Stainless Steel 316L(1.4409)

Comparable to stainless steel 316 but with a lower carbon level to increase weldability of the stainless steel.

17-4 PH(1.4549)

A high quality stainless steel which is regularly used in the aircraft industry. It is characterized by a high tensile strength, hardness, toughness and is also corrosion resistant.


Stainless Steel - Grade 304 (UNS S30400)

Chemical Formula

Fe, <0.08% C, 17.5-20% Cr, 8-11% Ni, <2% Mn, <1% Si, <0.045% P, <0.03%

Background

Grade 304 is the standard "18/8" stainless; it is the most versatile and most widely used stainless steel, available in a wider range of products, forms and finishes than any other. It has excellent forming and welding characteristics. The balanced austenitic structure of Grade 304 enables it to be severely deep drawn without intermediate annealing, which has made this grade dominant in the manufacture of drawn stainless parts such as sinks, hollow-ware and saucepans. For these applications it is common to use special "304DDQ" (Deep Drawing Quality) variants. Grade 304 is readily brake or roll formed into a variety of components for applications in the industrial, architectural, and transportation fields. Grade 304 also has outstanding welding characteristics. Post-weld annealing is not required when welding thin sections.

Grade 304L, the low carbon version of 304, does not require post-weld annealing and so is extensively used in heavy gauge components (over about 6mm). Grade 304H with its higher carbon content finds application at elevated temperatures. The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures.

Key Properties

These properties are specified for flat rolled product (plate, sheet and coil) in ASTM A240/A240M. Similar but not necessarily identical properties are specified for other products such as pipe and bar in their respective specifications.

Composition

Typical compositional ranges for grade 304 stainless steels are given in table 1.


Table 1. Composition ranges for 304 grade stainless steel

GradeCMnSiPSCrMoNiN
304min.
max.
-
0.08
-
2.0
-
0.75
-
0.045
-
0.030
18.0
20.0
-8.0
10.5
-
0.10
304Lmin.
max.
-
0.030
-
2.0
-
0.75
-
0.045
-
0.030
18.0
20.0
-8.0
12.0
-
0.10
304Hmin.
max.
0.04
0.10
-
2.0
-
0.75
-0.045-
0.030
18.0
20.0
-8.0
10.5
-

Mechanical Properties

Typical mechanical properties for grade 304 stainless steels are given in table 2.

Table 2. Mechanical properties of 304 grade stainless steel

GradeTensile Strength (MPa) minYield Strength 0.2% Proof (MPa) minElongation (% in 50 mm) minHardness
Rockwell B (HR B) maxBrinell (HB) max
3045152054092201
304L4851704092201
304H5152054092201

304H also has a requirement for a grain size of ASTM No 7 or coarser.


Physical Properties

Typical physical properties for annealed grade 304 stainless steels are given in table 3.

Table 3. Physical properties of 304 grade stainless steel in the annealed condition

GradeDensity (kg/m3)Elastic Modulus (GPa)Mean Coefficient of Thermal Expansion (μm/m/°C)Thermal Conductivity (W/m.K)Specific Heat 0-100 °C (J/kg.K)Electrical Resistivity (nΩ.m)
0-100 °C0-315 °C0-538 °Cat 100 °Cat 500 °C
304/L/H800019317.217.818.416.221.5500720

Grade Specification Comparison

Approximate grade comparisons for 304 stainless steels are given in table 4.

Table 4. Grade specifications for 304 grade stainless steel

GradeUNS NoOld BritishEuro normSwedish SSJapanese JIS
BSEnNoName
304S30400304S3158E1.4301X5CrNi18-102332SUS 304
304LS30403304S11-1.4306X2CrNi19-112352SUS 304L
304HS30409304S51-1.4948X6CrNi18-11--

These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.

Corrosion Resistance

Excellent in a wide range of atmospheric environments and many corrosive media. Subject to pitting and crevice corrosion in warm chloride environments, and to stress corrosion cracking above about 60 °C. Considered resistant to potable water with up to about 200 mg/L chlorides at ambient temperatures, reducing to about 150 mg/L at 60 °C.

Heat Resistance

Good oxidation resistance in intermittent service to 870 °C and in continuous service to 925 °C. Continuous use of 304 in the 425-860 °C range is not recommended if subsequent aqueous corrosion resistance is important. Grade 304L is more resistant to carbide precipitation and can be heated into the above temperature range.

Grade 304H has higher strength at elevated temperatures so is often used for structural and pressure-containing applications at temperatures above about 500 °C and up to about 800 °C. 304H will become sensitized in the temperature range of 425-860 °C; this is not a problem for high temperature applications, but will result in reduced aqueous corrosion resistance.

Heat Treatment

Solution Treatment (Annealing) - Heat to 1010-1120 °C and cool rapidly. These grades cannot be hardened by thermal treatment.

Welding

Excellent weldability by all standard fusion methods, both with and without filler metals. AS 1554.6 pre-qualifies welding of 304 with Grade 308 and 304L with 308L rods or electrodes (and with their high silicon equivalents). Heavy welded sections in Grade 304 may require post-weld annealing for maximum corrosion resistance. This is not required for Grade 304L. Grade 321 may also be used as an alternative to 304 if heavy section welding is required and post-weld heat treatment is not possible.

Machining

A "Ugima" improved machinability version of grade 304 is available in bar products. "Ugima" machines significantly better than standard 304 or 304L, giving higher machining rates and lower tool wear in many operations.

Dual Certification

It is common for 304 and 304L to be stocked in "Dual Certified" form, particularly in plate and pipe. These items have chemical and mechanical properties complying with both 304 and 304L specifications. Such dual certified product does not meet 304H specifications and may be unacceptable for high temperature applications.

Applications

Typical applications include:

Food processing equipment, particularly in beer brewing, milk processing & wine making.

Kitchen benches, sinks, troughs, equipment and appliances

Architectural panelling, railings & trim

Chemical containers, including for transport

Heat Exchangers

Woven or welded screens for mining, quarrying & water filtration

Threaded fasteners

Springs


The latest Stainless Steel Material Grade Standard Contrast

China GBJapan JISAmericaKorea KSEU BS ENAustralia AS
Old GradeNew GradeASTMUNS
austenitic stainless steel
1Cr17Mn6Ni5N12Cr17Mn6Ni5NSUS201201S20100STS2011.4372201-2
1Cr18Mn8Ni5N12Cr18Mn9Ni5NSUS202202S20200STS2021.4373-
1Cr17Ni712Cr17Ni7SUS301301S30100STS3011.4319301
0Cr18Ni906Cr19Ni10SUS304304S30400STS3041.4301304
00Cr19Ni10022Cr19Ni10SUS304L304LS30403STS304L1.4306304L
0Cr19Ni9N06Cr19Ni10NSUS304N1304NS30451STS304N11.4315304N1
0Cr19Ni10NbN06Cr19Ni9NbNSUS304N2XM21S30452STS304N2-304N2
00Cr18Ni10N022Cr19Ni10NSUS304LN304LNS30453STS304LN-304LN
1Cr18Ni1210Cr18Ni12SUS305305S30500STS3051.4303305
0Cr23Ni1306Cr23Ni13SUS309S309SS30908STS309S1.4833309S
0Cr25Ni2006Cr25Ni20SUS310S310SS31008STS310S1.4845310S
0Cr17Ni12Mo206Cr17Ni12Mo2SUS316316S31600STS3161.4401316
0Cr18Ni12Mo3Ti06Cr17Ni12Mo2TiSUS316Ti316TiS31635-1.4571316Ti
00Cr17Ni14Mo2022Cr17Ni12Mo2SUS316L316LS31603STS316L1.4404316L
0Cr17Ni12Mo2N06Cr17Ni12Mo2NSUS316N316NS31651STS316N-316N
00Cr17Ni13Mo2N022Cr17Ni13Mo2NSUS316LN316LNS31653STS316LN1.4429316LN
0Cr18Ni12Mo2Cu206Cr18Ni12Mo2Cu2SUS316J1--STS316J1-316J1
00Cr18Ni14Mo2Cu2022Cr18Ni14Mo2Cu2SUS316J1L--STS316J1L--
0Cr19Ni13Mo306Cr19Ni13Mo3SUS317317S31700STS317-317
00Cr19Ni13Mo3022Cr19Ni13Mo3SUS317L317LS31703STS317L1.4438317L
0Cr18Ni10Ti06Cr18Ni11TiSUS321321S32100STS3211.4541321
0Cr18Ni11Nb06Cr18Ni11NbSUS347347S34700STS3471.455347
austenitic -ferrite stainless steel (duplex stainless steel)
0Cr26Ni5Mo2-SUS329J1329S32900STS329J11.4477329J1
00Cr18Ni5Mo3Si2022Cr19Ni5Mo3Si2NSUS329J3L-S31803STS329J3L1.4462329J3L
ferrite stainless steel
0Cr13Al06Cr13AlSUS405405S40500STS4051.4002405
-

Product Tags:

stainless steel investment casting

      

precision investment castings

      

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SS304 Stainless Steel Casting Elbow Parts Pipe Fittings Custom Castings Supplier China