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| No.8858833
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Information Name: | Supply 20crmnti round steel 20crmnti |
Published: | 2012-11-28 |
Validity: | 300 |
Specifications: | Complete |
Quantity: | 150.00 |
Price Description: | |
Detailed Product Description: | The the Grade: 20CrMnTi standard: GB / T 3077-1999 ● Features and Scope: The good performance of case-hardened steel, high hardenability, after carburizing hard, wear-resistant surface and a tough core part, has high low temperature impact toughness, weldability medium, after normalizing machinability. Used in the manufacture of cross-section <30mm withstand high-speed, medium or heavy load, impact and friction parts, such as gears, ring gear, gear shaft crosshead. 18CrMnTi the generation of steel, widely used as a carburizing parts in the car. Tractor industry for the cross section to 30mm below withstand high speed or heavy-duty as well as by the impact. Friction important carburizing parts, such as gears. Axis ring gear gear shaft the sliding bearing spindle. crosshead. claw clutch. worm. Chemical composition ● Chemical Composition Carbon C: 0.17 ~~ 0.23 Si Si: 0.17 ~~ 0.37 Manganese Mn: 0.80 to 1.10 Chromium Cr: 1.00 to 1.30 sulfur S: allow the residual content ≤ 0.035 Phosphorus P: allow the residual content ≤ 0.035 20CrMnTi nickel Ni: allow the residual content ≤ 0.030 Copper Cu: to allow the residual content ≤ 0.030 titanium Ti: 0.04 to 0.10 edit this paragraph mechanical properties ● mechanical properties: tensile strength σb (MPa): ≥ 1080 (110) yield strength σs (MPa): ≥ 835 ( 85) Elongation δ5 (%): ≥ 10 Reduction of area ψ (%): ≥ 45 impact energy Akv (J): ≥ 55 20CrMnTi impact toughness values ??αkv (J/cm2): ≥ 69 (7) hardness: ≤ 217HB sample size: the size of the sample blank 15mm ● 20CrMnTi density: 7.8 × 103kg/m3 elastic modulus: 207GPa Poisson ratio: 0.25 Thermal conductivity: 1.26 × 10-51 / ° C gear steel finished map heat treatment specifications ● Heat treatment and Microstructure: Heat treatment specifications: quenching: first time 880 ℃, the second 870 ° C, oil cooling; tempering 200 ° C, water-cooled, air-cooled. Detailed heat treatment specification and mechanical properties: the sample blank size / mm: 15 Heat Treatment | quenching heating temperature / ° C | first quenching: 880 Heat Treatment | quenching heating temperature / ° C | second quenching: 870 Heat Treatment | quenching | coolant: oil heat treatment | Tempering | heating temperature / ° C: 200 Heat Treatment | Tempering | Coolant: water, the the empty mechanical properties of | tensile strength σb / MPa | ≥: 1080 mechanical properties of the yield point σs / MPa | ≥: 850 Mechanical Properties | Elongation δ5 (%) | ≥: 10 Mechanical Properties | surface shrinkage ψ (%) | ≥: 45 mechanical properties of shock absorption function AKV / J | ≥: 55 Delivery status hardness HBS | ≥: 217 ● Heat treatment and microstructure specifications: Heat treatment specifications: quenching: first 880 ° C, the second 870 ° C, oil cooling; tempering 200 ° C, water-cooled, air-cooled; microstructure: tempered martensite. ● Delivery status: to heat treatment (normalizing, annealing or high-temperature tempering) or without heat treatment delivery, the delivery status should be specified in the contract. ● 20CrMnTi density and elastic modulus: density: 7.8 × 103kg/m3 elastic modulus: 207GPa Poisson ratio: 0.25 Thermal conductivity: 1.26 × 10-51 / ° C ● 20CrMnTi normalizing 20CrMnTi normalizing, 20CrMnTi steel in the heating 860 ℃ air cooling insulation rapid cooling to 680 ℃ insulation temperature normalizing process with heating 960 ℃ insulation cold fog after high temperature normalizing process, the two processes compared to a different place and role. segment represents ① steel beginning digit indicates the carbon content of the steel, said the average carbon content of the very few, such as 40Cr 25Cr2MoVA alloy tube (2) steel alloying elements, in addition to individual micro-alloying elements, generally a few percent representation. When the average alloy content of <1.5%, steel generally marked element symbols, rather than marked content prone to cause confusion, but in exceptional circumstances, can also be marked with the number "1" in the element symbols, such as steel, No. the the "12CrMoV" and "12Cr1MoV", the former of chromium content of 0.4-0.6%, the latter is 0.9-1.2%, and the remaining components are all the same. When the average content of alloying elements ≥ 1.5% ≥ 2.5% ≥ 3.5% ... behind the element symbols should be marked content, corresponding to 2,3,4 ... and so on. For example, 18Cr2Ni4WA. ③ steel vanadium V, titanium Ti, AL aluminum, boron B, and rare earth RE, alloying elements, are micro-alloying elements, although the content is very low, should remain in the steel marked. E.g. 20MnVB steel. Vanadium 0.07-0.12% and 0.001-0.005% boron. ④ High quality steel in the steel and finally add the "A", to distinguish it from the general high quality steel. ⑤ special purpose alloy structural steel, steel dubbed (or suffix) on behalf of the symbols of the use of the steel. Such as riveting Lo dedicated 30CrMnSi steel, steel to ML30CrMnSi. Alloy pipe and seamless pipe both existing relationship and differences between them can not be confused. Alloy tube steel pipe (material) in accordance with the production of materials used to define the name suggests is alloy tube; seamless pipe steel pipe in accordance with the Production (seam seamless) to define, distinguish it from seamless pipe seam pipe, longitudinally welded pipes and spiral. |
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Copyright © GuangDong ICP No. 10089450, Hangzhou Yanagida Metal Materials Co., Ltd. All rights reserved.
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You are the 24525 visitor
Copyright © GuangDong ICP No. 10089450, Hangzhou Yanagida Metal Materials Co., Ltd. All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility