q345b vs q235b

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Q345 Steel Specification and Equivalent Standard - AGICO

Q345 steel specification: Q345 steel belongs to 16Mn steel grade, usually it is produced in hot rolled state, hot rolled steel plate, hot rolled steel coil/sheet, it has comprehensive mechanical and welding property, as it shows good performance in structural purposes, it is widely used as welding structural part in manufacturing of ship, railway and vehicles, bridges, boiler, pressure vessel ...

Q235 vs Q345 Strength? - Structural engineering other ...

eng-tips› Forums› Structural Engineers› ActivitiesSep 28, 2010· RE: Q235 vs Q345 Strength? dcarr82775 (Structural) 28 Sep 10 15:42 If (and that is a big if) the paint spall is stress related, it implies that the round black foot was loaded eccentrically and there are larger strains in the steel at the sides of the hole for the foot.Q235 material is in accordance with PRC standard GB 700 and Q345 is in accordance with GB 1591. I have translated copies of these standards but they may be out of date now. According to my documents: The min. yield point of Q235 is 235 MPa for thicknesses < 17mm, 225 MPa for 16-40mm, 215 MPa for 40-60mm, 205 MPa for 60-100mm, 195 MPa for 100-150mm, and 185 MPa for >150mm. The tensile strength is 375-500 MPa. The min. yield point of Q345 is 345 MPa for thicknesses < 17mm, 325 MPa for 16-35mm, 295 MPa for 35-50mm, and 275 MPa for 50-100mm. Tensile strength 470-630 MPa.Excellent, so this means the Q345 is a ballpark average of around 50% stronger. I'm ok with that. The Q235 did the job so I can live with this Q345 then. Thanks! IanIan, If deflection is the source of your problem, a higher strength steel will not fix it. You will need to add stiffness to the piece to limit the deflection. It could also be just a bad paint job.I don't really know that I agree sme75, in the past when I've had similar deflection problems switching to a higher strength steel has solved the problem without additional bracing. IanThe Q345 is stronger as bones206 noted. That means that it has a higher yield stress and higher tensile strength. Its stiffness (Young's modulus) should be about the same as the Q235 however. Since you mentioned that there is no permanent deformation at the maximum load then the elastic strains might be what's causing the powder coating to pop off, and these will be the same for the 2 steels. Also, the location of the peel is not where I expect the highest stresses and strains to be located, so it may be something else! Paint peels off for several reasons, and stress/strain is only one of them. Nagi Elabbasi Veryst EngineeringHow does the Modulus of Elasticity compare for the two steels? Probably about the same. The paint did not peel off in a high stress area, so bad paint job sounds more likely. BAI too am now very curious how the two modulus' compare. IanIan: I agree with BA's last post, and would add that if paint were going to be cracking and chipping due to high stresses it would be at the welds joining the plate (foot) to the steel tube section. That welding and area is the area to watch. There really isn't any appreciable stress at the point the paint bubble failed. If you loaded the rubber pad on its near edge in the photo, over the paint bubble, rather than fairly uniformly over its whole area, you could get some torsional stresses where the paint failed. But, I doubt that they would be a likely failure mechanism.I follow you dhengr. I drew attention to the powder coating popping off because this happened right as the lift attempted to lift this heavy load at that moment. I still wish someone knew the two modulus of elasticities of the two metals. IanI don't think the Young's modulus will differ much from that of other mild steels (29,000-30,000 ksi). There are also different 4 grades of Q235 and 5 grades of Q345 which have varying carbon content. The PRC Steel Design Code GB 50009 uses a value of E = 206,000 MPa (29,877,774 psi). Perhaps the steel mill in China could provide you with some more specific material data.Equivalent of Chinese Material Q235BAug 06, 2012Extrapolation of Charpy values for lower temperatures ...Aug 05, 2009See more results

What is Q235?The difference between Q235A and Q235B ...

What is Q235?The difference between Q235A and Q235B. Ordinary carbon steel - General Board, is a steel material. Q represents the yield of this material, behind the 235, refers to the yield value of this material at about 235.

ASTM A572 Gr 50 vs Q345B - American Welding Society

May 07, 2013· Hello everybody: The Technical Specifications for metal works (gates, trash racks, etc.) of a hydro project indicate, particularly, for the gates to use steel ASTM A572 Gr 50 or its equivalent S355JR according to EN 10025. The Contractor is trying to change that material to steel Q345B (chinese material and code).[PDF]

COMPARISON CHART BETWEEN Q235 GR B vs A36

COMPARISON CHART BETWEEN Q235 GR B vs A36 ( STRUCTURAL QUALITY ) C Si Mn S P Tensile Strength (Mpa) Yield Point (Mpa) Elongation TEMPERATURE AKV

Q235B,Q235B PLATE,Q235B STEEL

Q235B is the most common used among carbon steel.It is equal to steel grades ASTM A36,JIS G3101 SS400,EN 10025-2 S235JR.Xinsteel stocks carbon steel Q235B in coils shape and plate shape at port warehouses with many sizes.

Q235 Steel Plate Equivalent Steel Standard-ASTM A36

A36 steel plate is similar to Q235B steel plate, it is one Q235b equivalent steel standard, another one is SS400. While the difference between A36 and Q235B is as follows:

What is the difference between steel grades q235A and q235B

answers› …› Engineering› Mechanical EngineeringQ235A and Q235B, the main difference lies in the carbon content, carbon content of Q235A in 0.14-0.22, Q235B carbon content in 0.12-0.20 Relatively speaking Q235B mechanical performance is far ...

Properties of Q345B Steel for Plate Material | Sciencing

Q345B steel is a Chinese standardized low alloy, medium tensile strength steel made with a hot-rolling process, and is used for a number of manufacturing purposes. It is a steel with less than 0.2 percent of its composition made up of carbon, less than 0.55 percent of its composition made of silicon and several impurities (mostly sulfur ...

Q345 steel equivalent is standard - sheetstainlesssteel

02.12.2016, I would like to know the equivalent Chinese steel standard for ASTM .. 24.09.2015, I am after Australian Grade equivalents for Q345B and Q235B. Related Articles light …

What is the ASTM equivalent of Q345B - Answers

answers› …› Engineering› Mechanical EngineeringThe ASTM equivalent of Q345B is A572 gr.50. This is a steel platethat is used in the construction of large structures like bridges.

q345b equivalent astm - natural-elements-online

q235a equivalent astm material, angle bar definition, Youngmans Scaffold Towers, steel l profile, q345b equivalent, q345b material, gb q235-b, steel grade q345b equivalent, q235b and q345b, q345b steel, rolled angle, q235b astm equivalent, engle bar, en 10025 equivalent astm, gb q235[PDF]

q235a vs q235b - pressure-vessel-steel

q235a vs q235b. What is Q235?The difference between Q235A and Q235B … What is Q235?The difference between Q235A and Q235B. Ordinary carbon steel - General Board, is a steel material.

Mechanical Properties of Chinese low alloy steel: Q345B

Q345B steel is a Chinese standardized low alloy, medium tensile strength steel made with a hot-rolling process, and is used for a number of manufacturing purposes. It is a steel with less than 0.2 percent of its composition made up of carbon, less than 0.55 percent of its composition made of silicon and several impurities (mostly sulfur ...

Q345 Steel Equivalent ASTM A572 Grade 50, Steel Sheets ...

Q345 Steel Equivalent ASTM A572 Grade 50, Find high Quality Products from Steel Sheets, Sichuan Liaofu Special Steel Trading Co., Ltd.

Q345 steel equivalent is standard - sheetstainlesssteel

02.12.2016, I would like to know the equivalent Chinese steel standard for ASTM .. 24.09.2015, I am after Australian Grade equivalents for Q345B and Q235B. Related Articles light …

What is the ASTM equivalent of Q345B - Answers

answers› …› Engineering› Mechanical EngineeringThe ASTM equivalent of Q345B is A572 gr.50. This is a steel platethat is used in the construction of large structures like bridges.

q345b equivalent astm - natural-elements-online

q235a equivalent astm material, angle bar definition, Youngmans Scaffold Towers, steel l profile, q345b equivalent, q345b material, gb q235-b, steel grade q345b equivalent, q235b and q345b, q345b steel, rolled angle, q235b astm equivalent, engle bar, en 10025 equivalent astm, gb q235[PDF]

q235a vs q235b - pressure-vessel-steel

q235a vs q235b. What is Q235?The difference between Q235A and Q235B … What is Q235?The difference between Q235A and Q235B. Ordinary carbon steel - General Board, is a steel material.

Mechanical Properties of Chinese low alloy steel: Q345B

Q345B steel is a Chinese standardized low alloy, medium tensile strength steel made with a hot-rolling process, and is used for a number of manufacturing purposes. It is a steel with less than 0.2 percent of its composition made up of carbon, less than 0.55 percent of its composition made of silicon and several impurities (mostly sulfur ...

Q345 Steel Equivalent ASTM A572 Grade 50, Steel Sheets ...

Q345 Steel Equivalent ASTM A572 Grade 50, Find high Quality Products from Steel Sheets, Sichuan Liaofu Special Steel Trading Co., Ltd.

FAQ: what is the difference between Q345A, Q345B,Q345C ...

customer usually choose the steel materials as per the exact application such as buidling, construction, machinery, airport, oil and gas transmission, electricity etc.

Q235B Carbon structural steel plate, Q235B steel sheet ...

Q235B steel sheet is done at room temperature impact test, V-notch.Q235B steel plate is a special purpose carbon steel, such as bridge steel, marine steel and so on, basically using carbon structural steel representation, but the last addition of steel in the use of letters.

China Q235B Q345b A36 Hot Rolled Carbon Steel Plate ...

China Q235B Q345b A36 Hot Rolled Carbon Steel Plate, Find details about China Carbon Steel Plate, Steel Plate from Q235B Q345b A36 Hot Rolled Carbon Steel Plate - Jinan Sino Steel Co., Ltd.

SS400 SS540 or Q235B Q345B Steel Profiles EQUAL angle …

Q235b Q345b Structural Construction Hot Rolled … Q235b Q345b Structural Construction Hot Rolled Angle Steel Bar Ss400 , … Home > Products > Minerals …

Angle Steel with Material: GB Q235B, Q345B or Equivalent ...

q235a equivalent astm material, Youngmans Scaffold Towers, angle bar definition, steel l profile, q345b material, q345b equivalent, steel grade q345b equivalent, gb q235-b, q235b and q345b, q345b steel, en 10025 equivalent astm, rolled angle, q235b astm equivalent, engle bar, gb q235

GB/T700 Q235B Carbon and Low-alloy High-strength Steel Plate

Any request for GB/T700 Q235B Carbon and Low-alloy High-strength Steel Plate Email: [email protected] and Tel:0086-371-65652655 Inquiry If you have any request or doubts,Please send message to us,It will be checked for you on time.

supplier of stainless vs 1095,A36,Q235B,Q345B steel plate ...

Jan 27, 2009· 1095 high carbon vs 154cm stainless, 1095 steel vs 154cm, 1095 vs 154cm, 154cm machete, 154cm or 1095, 154cm rust, 154cm steel vs 1095, 154cm vs 1095, does 154cm steel rust, does s30v rust, how to sharpen 154cm steel, sharpening 154cm steel, stainless steel grades 154cm, will 154 cm steel rust. Springfield XD Forum.

Material Q345B - Scribd

Material properties. Material Group Subgroup Comment Application Q345B (China / GB) Structural and constructional steels GB/T 1591 (1994) High strength low alloy structural steels Symbol Q345 superseded the old designations: 12MnV, 14MnNb, 16Mn, 16MnRE, 18Nb.

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