JIS SKD7 DIN 32crmov3-3 BS Bh10 Hot Rolled Steel Round Bar

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JIS SKD7 DIN 32crmov3-3 BS BH10 Hot Rolled Steel Round Bar
JIS SKD7 DIN 32crmov3-3 BS Bh10 Hot Rolled Steel Round Bar
1: ASTM H10 steel introduction
    H10 tool steel is one hot works tool steel in ASTM A681 standard, which is for alloy tool steel. The ASTM/AISI classifies chromium hot work tool steels as group H steels, ranging from H10, H11, h12 to H19. AISI H10 Tool Steel is one of chromium hot work tool steel that exhibits excellent resistance to softening at elevated temperature.
H10 Tool Steel is capable of being heat treated to higher hardness than the tungsten hot work steels, and in addition offers greater toughness. H10 tool steel has good thermal fatigue characteristics, and unlike the tungsten hot work steels and H10 hot work tool steels may be safely water cooled in service.

    H10 hot works tool steel is recommended for difficult hot work tooling applications such as hot punches, die casting dies, forging dies, hot shear blades, hot gripper dies, and extrusion tooling etc.

 

2: ASTM H10 steel equivalent

CountryChinaJapanGermanyUSAUK
StandardGB/T 1299JIS G4404DIN EN ISO4957ASTM A681BS 4659
Grade SKD71.2365/32CrMoV12-28 H10/T20810BH10
 

3:ASTM H10 steel chemical composition

GradeCMnPSSiCrVMo
H10/T208100.350.450.200.700.030.030.801.253.003.750.250.752.003.00
1.2365/
32CrMoV12-28
0.280.350.150.450.100.402.703.200.400.702.503.00
SKD70.280.350.150.450.030.030.100.402.703.200.400.702.503.00
BH100.300.400.400.350.350.751.102.803.200.300.502.652.95

 

4: ASTM H10 steel mechanical properties

    The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment, the mechanical properties will be different, such as normalized, tempered, QT. If you want to know the properties, kindly contact the salesman.  

 

5:ASTM H10 steel overviews

SizeRoundDia 6-1200mm
Plate/Flat/BlockThickness
6mm-500mm
Width
20mm-1000mm
ProcessEAF+LF+VD+Forged+Heat treatment(optional)
Heat treatmentNormalized ; Annealed ; Quenched ; Tempered
Surface conditionBlack; Peeled; Polished; Machined; Grinded; Turned; Milled
Delivery conditionForged; Hot rolled; Cold drawn
TestTensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc. 
Payment termsT/T;L/C;/Money gram/ Paypal
Trade termsFOB; CIF; C&F; etc..
Delivery time30-45 days
Packing Standard Packages, or as Customers Request
Application ASTM H10 tool steel are suitable for highly stressed hot work tools, mainly for the processing of heavy alloys, such as: Extrusion Industry: Dies, Inner Liners, Stems, Pressure Pads, Mandrels for Extrusion, Forging Industry: Forming Dies, Press Dies, Pressing Mandrels, Die Casting Industry: dies for die-casting, die inserts, hot shear blades, moulds for processing brass and light metal

 

6.Heat Treatment

Annealing 

    Heating slowly and uniformly to 750~790ºC, furnace cooling to
600ºC at a rate 10~20ºC/hr, further cooling in air. Hardness after annealing: max. 205 HB. Suitable precautions must be taken to prevent excessive carburization or decarburization.

Stress relieving

    600 to 650°C (1112 to 1202°F) Slow cooling in furnace; intended to relieve stresses set up by extensive machining, or in complex shapes. After through heating, hold in neutral atmosphere for 1 -2 hours.

Hardening

    H10 steel is a very deep hardening steel, and although oil quenching may be used where maximum hardness is required, air hardening is recommended for most applications. The use of salt bath or controlled atmosphere furnace is desirable to minimize decarburization, and if not available, pack hardening spent pitch temperature employed is usually in the range of 982°C -1037°C.

    1010 to 1050°C (1850 to 1922°F) Oil, salt bath (500-550°C / 932-1022°F), Holding time after temperature equalization: 15 to 30 minutes. Obtainable hardness: 52 -56 HRC

Tempering

    Slow heating to tempering temperature immediately after hardening / time in furnace 1 hour for each 20 mm of work piece thickness but at least 2 hours / cooling in air. It is recommended to temper at least twice. A third tempering cycle for the purpose of stress relieving may be advantageous 1st tempering approx. 30°C (86°F) above maximum secondary hardness. 2nd tempering to desired working hard-ness. The tempering chart shows average tem-pered hardness values. 3rd for stress relieving at a temperature 30 -50°C (86 to 122°F) below highest tempering temperature

 

7: Delivery condition
    For hot forged or hot rolled bar, usually the delivery condition is hot forged or rolled, annealed, rough turned.
    For hot forged plate, usually the delivery condition is hot forged, annealed, milled surface.

    For hot rolled plate, usually the delivery condition is hot rolled, annealed, black surface.

 
 
 

JIS SKD7 DIN 32crmov3-3 BS Bh10 Hot Rolled Steel Round BarHunan Qilu Industrial Co., Ltd has the capacity to forge round steel, steel flat, square steel, module, shaft and roller, etc. The main specifications of the products include Φ80-1000mm forging materials and 80-1200mm square billets and which the maximum piece weight can reach 50T.

JIS SKD7 DIN 32crmov3-3 BS Bh10 Hot Rolled Steel Round Bar
JIS SKD7 DIN 32crmov3-3 BS Bh10 Hot Rolled Steel Round Bar
Hunan Qilu Industrial Co., Ltd were already engaged in exporting steel for 11 years, could supply a great variety of hot forged, hot rolled and cold drawn Steels,  including engineering steel, cold work tool steel, hot work tool steel, plastic mold steel, spring steel, high speed steel, stainless steel etc., besides Qilu Industrial also has their own heating treatment shop and machining shop to provide heating and cutting service.

Since 2008 year, Hunan Qilu Industrial has the right to export all FORGED STEEL behalf of Qilu Speical Steel Co.,ltd which is specialized in smelting and forging of special steel since 1965 year, now Qilu special steel is one of the biggest manufacturer of forged product in China.The forged products are used in Automotive, Aerospace, Power Generation, Oil & Gas, Transportation and Industrial. We already set up the warehouse in Wuxi and Dongguan city, more than 20000 tons ex-stock could be supplied with kinds of size.

Qilu Industrial is the professional one-stop steel manufacturer, stockist and exporter in China, our customers spread all over the world, include West Europe, North America, South America, Asia, Middle Asia, Africa, Australia, etc.

JIS SKD7 DIN 32crmov3-3 BS Bh10 Hot Rolled Steel Round Bar
JIS SKD7 DIN 32crmov3-3 BS Bh10 Hot Rolled Steel Round BarThe company owns advanced special steel smelting facilities and forging processing equipments, the main steel-making equipment include 2 sets of 50t ultra-high power electric arc furnaces,2 sets of 60t LF refining furnaces,1 set of 60t vacuum degassing refining furnace and 4 sets of 1-20t electroslag re-melting furnaces.
The main forging equipments mainly include:3 sets of 5t electro-hydraulic hammers, 1 set of high-speed forging units of 800t,1600t,2000t and 4500t respectively.

JIS SKD7 DIN 32crmov3-3 BS Bh10 Hot Rolled Steel Round Bar
JIS SKD7 DIN 32crmov3-3 BS Bh10 Hot Rolled Steel Round Bar
JIS SKD7 DIN 32crmov3-3 BS Bh10 Hot Rolled Steel Round BarJIS SKD7 DIN 32crmov3-3 BS Bh10 Hot Rolled Steel Round BarHunan Qilu Industrial CO., LTD
Web: qilusteel.en.made-in-china.com 

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