Big Round 254smo Stainless Steel Elbow

• Customization: Available
• Connection: Male
• Shape: Equal
• Model NO.: 254smo
• Head Code: Round
• Angle: 90 Degree
• Wall Thickness: Sch10s
• Material: Stainless Steel
• Technics: Forged
• Certification: ASME, ANSI, DIN, JIS, BS, GB, GS, KS, API
• Color: Silver
• Sample: Provided
• MOQ: 500kg
• Lead Time: in Stock 5~7days
• Payment: Tt/LC
• Size: DN15-DN600
• Transport Package: Fumigated Wooden Box
• Specification: 0.25kg
• Trademark: Bao
• Origin: China
• HS Code: 7307220000
• Production Capacity: 5000mt/Mt

Product Description

Introduction

Stainless steel grade 254 SMO™ is a very high end austenitic stainless steel. It is designed with a combination of impact toughness resistance to chloride stress corrosion cracking, and pitting and crevice corrosion with strength that is twice that of the stainless steel 300 series.

For certain applications, grade 254 SMO™ has been reported to be a cost-effective substitute for high nickel and titanium alloys. It is known to possess excellent workability as well.

The following sections will discuss in detail about stainless steel grade 254 SMO™.

Chemical Composition

The chemical composition of stainless steel grade 254 SMO™ is outlined in the following table.

Element	Content (%)
Iron, Fe	55.69
Chromium, Cr	20
Nickel, Ni	18
Molybdenum, Mo	6.1
Nitrogen, N	0.20
Carbon, C	0.010

Physical Properties

The physical properties of stainless steel grade 254 SMO™ are tabulated below.

Properties	Metric	Imperial
Density	8 g/cm^3	0.289 lb/in^3

Mechanical Properties

The following table shows mechanical properties of stainless steel grade 254 SMO™.

Properties	Metric	Imperial
Tensile strength	680 MPa	98600 psi
Yield strength	300 MPa	43500 psi
Modulus of elasticity	195 GPa	28300 ksi
Shear modulus	75 GPa	10900 ksi
Poisson's ratio	0.30	0.30
Elongation at break	50 %	50 %
Hardness, Brinell	210	210

Thermal Properties

The thermal properties of stainless steel grade 254 SMO™ are tabulated below.

Properties	Metric	Imperial
Thermal expansion co-efficient (@20-100°C/68-212°F)	16.5 µm/m°C	9.17 µin/in°F
Thermal conductivity	14 W/mK	97.2 BTU in/hr.ft².°F

Other Designations

Other designations that are equivalent to stainless steel grade 254 SMO™ include the following.

ASTM A813	ASTM A469	ASTM A269	ASTM A240	ASTM A182 (F44)
ASTM A814	ASTM A312	ASTM A249

Fabrication and Heat Treatment

Machinability

Stainless steel grade 254 SMO™ is quite tough to machine due to the extremely high work hardening rate and lack of sulfur content; however using sharp tools, overpowered machine tools, positive feeds, good amount of lubrication, and slow speeds tend to provide good machining results.

Welding

Welding of stainless steel grade 254 SMO™ requires filler material without which it results in poor strength properties. Filler metals such as AWS A5.14 ERNiCrMo-3, and alloy 625 are recommended. Electrodes used in the process, have to match with AWS A5.11 ENiCrMo-12.

Annealing

Annealing of this material should be performed at 1149-1204°C (2100-2200°F), which should be followed by a water quench.

Hot Working

Forging, upsetting and other operations relating to this material can be performed at 982 - 1149°C (1800 - 2100°F). It is recommended that temperatures do not exceed this range as it would result in scaling and reduction in the workability of the material. To re-attain maximum corrosion resistant properties, it is advisable to perform post-process annealing.

Cold Working

Cold working can be carried out using all the traditional methods; however the process would be tough due to its high work hardening rate. The result will provide the material with increased strength and toughness.

Hardening

Stainless steel grade 254 SMO™ does not respond to heat treatment. Hardening is possible only through cold reduction.

Applications

Stainless steel grade 254 SMO™ is used in the following areas:

• Saltwater handling
• Tall oil distillation columns
• Flue gas desulfurization scrubbers
• Components used in petroleum production
• Food processing equipment
• Process equipment in chemical industry
• Bleaching equipment in the pulp and paper industry
• Flue-gas cleaning
• Desalination
• Heat exchangers

Stock

Form	Specification	Supply Form	Others
Sheet	Thickness:0.40-4.75mm,General Width:1000,1219,1500mm	Whole Coil or piece of it	Cold Annealed,Surface 2B,2E
Plate	Thickness:4.76-60mm,Width:1500,2000,2500mm,Length:3000,6000,8000,8500mm(Under 10mm plate can be coiled)	Whole Coil or piece of it	Single hot rolling,Solid solution annealed state,Surface 1D
Belt	Thickness:0.10-3.0mm,Width:50-500mm	Whole Coil or Specified size	Cold Annealed,Surface 2B,2E
Bar & Rod	Rolled barΦ5-45mm,Length≤1500mm	Polished Bar(circle,Square)	Solution annealing,descaling
	Forged barΦ26-245mm,Length≤4000mm
Weld tube	Outer diameterΦ4.76-135mm,Wall Thickness0.25-4.00mm,Length:≤35000 mm	Base on your requirement	Use for PHE
Seamless Tube	Outer diameterΦ3-114mm,Wall Thickness0.2-4.5mm	Base on your requirement	Use for PHE
Wire	Outer diameterΦ0.1-13mm	Base on your requirement	Ni & Ni alloy, Ti & Ti alloy
Forged piece	roundness and square alloy	Base on your requirement	Steel, Alloy
Flangs	All kinds of Flangs	Base on your requirement	Steel, Alloy
Welding Material	Coil wire Φ0.90mm/1.2mm/1.6mm	Base on your requirement	Certificate of Origin:America, Sweden, Britain, Germany, Austria, Italy, France.
	Straight WireΦ1.2mm/1.6mm/2.4mm/3.2mm/4.0mm
	Welding rodΦ2.4mm/3.2mm/4.0mm
Tube	Elbow, three links, four links, different diameter size	Base on your requirement	Ni & Ni alloy, Ti & Ti alloy
Explosive bonded laminate	Raw Sheet Thickness≥2mm	Base on your requirement	Ni & Ni alloy, Ti & Ti alloy