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China, Chinese Harden Alloy Structural Steel Round Bar SAE 1045 4140 4340 8620 8640 5210 5140 St37 for Machine Structural Use Low-Alloyed Steels1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Steel ProductsSteel Round BarAlloy SteelTool Steel
Shandong Meide Import and Export Co., Ltd.
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Product Description IntroductionIn addition to iron and carbon, other alloy elements are added to alloy steel, which is called alloy steel. An iron-carbon alloy formed by adding an appropriate amount of one or more alloying elements on the basis of ordinary carbon steel. According to the different added elements and adopting appropriate processing technology, special properties such as high strength, high toughness, wear resistance, corrosion resistance, low temperature resistance, high temperature resistance and non-magnetism can be obtained.chemical compositioncompositionCSiMnPS5140/40Cr/SCr440/SCr440H/41Cr4/1.7035/41Cr40.37-0.440.17-0.370.5-0.8≤0.035≤0.03515CrMo/SCM415/15CrMo5/1.72620.12-0.180.17-0.370.4-0.7≤0.035≤0.03520CrMo/SCM420/4118/18CrMo4/20CrMo5/1.7264/1.72430.17-0.240.17-0.370.4-0.7≤0.035≤0.03530CrMo/4130/SCM420/25CrMo4/1.7218 0.26-0.340.17-0.370.4-0.7≤0.035≤0.03535CrMo0.32-0.40.17-0.370.4-0.7≤0.035≤0.0354140/4142/42CrMo/SCM440/42CrMo4/1.7225/42CrMoS40.38-0.450.17-0.370.5-0.8≤0.035≤0.03541500.48-0.530.15-0.350.75-1≤0.035≤0.044340/34CrNi3Mo/SNCM447/36CrNiMo6/1.65820.38-0.430.15-0.350.6-0..85≤0.035≤0.045120/20Cr/SCr420 /SCr420H /20Cr4/1.7027/20CrMn/20CrMnTi 0.17-0.220.15-0.350.7-0.9≤0.035≤0.035Product Description Material Science:Hot rolled/cold drawn/forged steel round steelProcess:It is forged from vacuum degassed steel ingot.Diameter:25mm - 1000mm (optional)Length:1000mm-12000mm Straightness:3mm/M max(optional)Process:EAF+LF+VD+forging+heat treatment (optional)Delivery conditions:Hot forging+rough machining (black surface after Q/T)+double tempering.Delivery time15-25 daysMinimum order quantity:5 tonsHeat treatment:Normalizing/annealing/quenching/tempering (optional)Technical data:Chemical composition, physical properties and mechanical tests according to customer requirementscharacteristic:According to your requirementsTest:Ultrasonic test according to SEP 1921-84 C/c and D/d (optional)Tag:Grade, heat resistant NO The length will be printed with the required color on each barPayment:T T 30% in advance; The balance shall be paid against shipping documents or irrevocable letter of credit at sight before shipmentTerms of tradeFOB,C&F,EXW...Mechanical propertiesMaterialDiameter of sampledmmHeat treatment or condition.Tensile strengthσb MpaPoint of yieldσs MpaRatio of elongationδ %Reduction of sectionψ %hardness HBWShock absorption energyKV2 JASTM 5115GB 15Crd=25Quenching + tempering≥735≥490≥11≥45≤179≥55ASTM 5120GB 20Crd=25Quenching + tempering≥835≥540≥10≥40≤179≥47ASTM 5130GB 30Crd=25Quenching + tempering≥885≥685≥11≥45≤187≥47ASTM 5135GB 35Crd=25Quenching + tempering≥930≥735≥11≥45≤207≥47ASTM 5140 GB 40Crd=25Quenching + tempering≥980≥785≥9≥45≤207≥47ASTM 5145 GB 45Crd=25Quenching + tempering≥1030≥835≥9≥40≤217≥39 Application15Cr/1.7015/15Cr3/5115/G51150/SCr415It is used to manufacture various carburized parts with high surface wear resistance, high core strength and toughness, highworking speed, but section size below 30mm, such as crank pin, piston pin, piston ring, coupling, small camshaft, pinion, slidevalve, piston, bushing, bearing ring, screw, rivet, etc. It can also be used as quenched steel, manufacturing small parts withcertain strength and toughness, but wide deformation requirements20Cr/A20202/20X/SCr420/5120 l/20Cr4It is used to manufacture various carburized or carbonitriding parts with small section (less than 30mm), simple shape, highspeed, small load, surface wear resistance and high core strength, such as pinion, pinion, valve, piston pin, bushing ratchet,tray, cam, worm, tooth clutch, etc. For parts with small heat treatment deformation and high wear resistance requirements, generalquenching or high-frequency quenching shall be carried out after carburizing, such as small module (less than 3mm) gear Splineshaft, shaft, etc. can also be used as quenched and tempered steel for manufacturing parts with low speed and medium load (impact)30Cr/A20302/30X/SCr430 /5130/28Cr4/1.7033It is used to manufacture various wear-resistant or impacted parts, such as gears, rollers, shafts, levers, rocker rods,connecting rods, bolts, nuts, etc. It can also be used as high-frequency surface hardening steel to manufacture wear-resistant andhigh-hardness parts35Cr/A20352/35X/SCr435/5135/37Cr4/1.7034It is used for manufacturing gears, shafts, rollers, bolts and other important quenched and tempered parts, and its use isbasically the same as that of 30Cr1.7035 40Cr 41Cr4 5140 42C4 SCR440(H)One of the most widely used steel grades of Zui is used to manufacture medium-speed and medium-load parts after quenching andtempering, such as machine tool gears, shafts, worms, spline shafts, thimble sleeves, etc. After quenching and tempering andhigh-frequency surface quenching, it is used to manufacture parts with high surface hardness and wear resistance, such as gears,shafts, spindles, crankshafts, mandrels, sleeves, pins, connecting rods, screws, nuts, inlet valves, etc. After quenching andmedium-temperature tempering, it is used to manufacture parts with heavy load and medium-speed impact, Such as oil pump rotor,sliding block, gear, main shaft, collar, etc., after quenching and low temperature tempering, it is used to manufacture heavyload, low impact, wear-resistant parts, such as worm, main shaft, shaft, collar, etc., after carbonitriding treatmentMake transmission parts with large size and high low-temperature impact toughness, such as shafts and gears. The 40Cr substitutesteels include 40MnB, 45MnB, 35SiNn, 42SiMn, 40MnVB, 42MnV, 40MnMoB, 40MnWB, etcSCr4455145/45Cr/A20452/45XSimilar to the use of 40Cr, it is mainly used for manufacturing high-frequency surface hardened shafts, gears, sleeves, pins, etc50Cr/A20502/5150/5150/G51500It is used to manufacture heavy and wear-resistant parts, such as hot-rolled rolls, transmission shafts, gears, thrust ringsbelow 600mm, mandrels of backup rolls, connecting rods and tappets of diesel engines, tractor clutches and bolts, wear-resistantand high-strength oil film bearing sleeves and gears in heavy mining machinery, as well as high-frequency surface-hardened parts,moderately elastic springs, etc Packaging1. by bundles, each bundle weight under 3 tons, for small outer diameter steel bars, each bundle with 4 - 8 steel strips. 2. after making by bundle, covered with Polyethylene waterproof cloth.3. make black paints painting on each bar, then make bundles20 feet container contains dimensionLength under 6000mm40 feet container contains dimensionLength under 12000mmBy bulk vesselFreight charge is low by bulk cargo, and large heavy sizes can not be loaded into containers can shipping by bulk cargoFAQ1. Who are we?Our headquarter is located in Shandong, China. Since 2022, we have sold to North America (60.00%), Western Europe (14.00%) and South America (6.00%). There are about 11-50 people in our office.2. How do we guarantee quality?Always provide pre-production samples before mass production;Always carry out final inspection before shipment;3. What can you buy from us?Copper, aluminum, die steel, titanium, customized machine parts4. Why should you buy from us instead of other suppliers?The company has 25 years of production experience. It has advanced precision production equipment, modern large warehouse, 200000 tons of inventory goods and a number of long-term stable cooperative customers.5. What services can we provide?Accepted delivery conditions: FOB, CFR, CIF, EXWAccepted payment currency: US dollar, Euro, Japanese yen, Canadian dollar, Australian dollar, Hong Kong dollar, British pound, RMB, Swiss franc;Accepted payment type: T/T, L/C, D/P D/A, PayPal;Optional ports: Tianjin, Shanghai, Guangzhou;Spoken: English, Chinese6. How can we get your price?A. We need the following information to quote for you:1). Product Name2). standard3). Material grade (chemical composition)4). dimension5). amount6). Special part drawing
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