Main Products: Steel Round Bar ,Steel Flat Bar ,Steel Plate ,Tool Steel ,Mould Steel
hot rolled Special alloy steel round bar 718h mould steel
USD $600 - $1,800 /Kilogram
Min.Order:5 Kilograms
Quick Details View All >
Dongguan Songshun Mould Steel Co., Ltd.
Business Type: Manufacturer
Dongguan Guangdong ChinaMain Products: Steel Round Bar ,Steel Flat Bar ,Steel Plate ,Tool Steel ,Mould SteelProduct Details
| hot rolled Special alloy steel round bar 718h mould steel | ||
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| Special alloy steel round bar 718h mould steel | |||||||||
| Round bar | Diameter(mm) | Length (mm) | |||||||
| 20~800 | 300~5800 | ||||||||
| Plate | Thickness(mm) | Width (mm) | Length (mm) | ||||||
| Max:800 | 2000~2300 | 3000~5800 | |||||||
| 2.Chemical compositon(%) of 718h mould steel | |||||||||
| Standard Number | C | Mn | Si | Cr | Mo | Ni | P | S | |
| GB 4Cr2MnNiMo | 0.32~1.40 | 0.6~0.8 | 0.2~0.4 | 1.7~2.0 | 0.25~0.40 | 0.85~1.15 | ≤0.030 | ≤0.030 | |
| AISI P20+Ni | 0.28~0.40 | 0.6~1.0 | 0.2~0.8 | 1.4~2.0 | 0.30~0.55 | Cu+Ni≤0.75 | ≤0.030 | ≤0.030 | |
| 40CrMnNiMo8-6-4 | 0.35~0.45 | 1.3~1.6 | 0.2~0.4 | 1.8~2.1 | 0.15~0.25 | 0.90~1.20 | ≤0.030 | ≤0.030 | |
| 3.Delivery condition of 718h mould steel | |||||||||
| Standard Number | Delivery condition | Hardness(HB) | |||||||
| GB | Q+T | 330~280HBS | |||||||
| ASTM | pre-hardening | ||||||||
| EN ISO | Q+T | about 300Hb | |||||||
| 4.Heat treatment of 718h mould steel | |||||||||
Annealing: Heat to 710~740°C, with hold at minimum rate for 3 hours. Slow furnace cooling to 600°C | |||||||||
Stress relieving: To be carried out after machining and before the final heat treatment. Heating to 530~580°C for 2 hours. | |||||||||
Hardening: Preheating to 500~550°C; - Austenitizing at 840~880°C - Oil or thermal bath cooling at 200~300°C, then oil cooling according to the steel shape and size. Quenched hardness: HRC 30~36 | |||||||||
Tempering: To be carried out after hardening and when the steel is at 60~80°C, at 500~600°C according to the required. hardness and with permanence for at least 2hours; cooling in air. | |||||||||
5.Characteristic of 718h mould steel | |||||||||
(1)The material hardness is uniform | |||||||||
(2)Good polishing performance and nice machining proverty | |||||||||
(3) Pre-hardening plastic mould steel | |||||||||
(4)Can be nitrided | |||||||||
(5)Suitable surface treatment like: chroming | |||||||||
6.Application of 718h mould steel | |||||||||
| (1)Used for various large-sized mirror plastic mould, precision plastic mould, like: cars accessies, home appliances, electronic equipment plastic mould. | |||||||||
| (2)It can be subject to a nitriding treatment to improve it's wear resistance. Injection and thermoplastic extrusion moulds, rubber moulds, mould carrier frames, containers. | |||||||||
Why can I believe your steel? | ||
| 1.All products must through the following quality tests to meet you requirments! | ||
| 100% Ultrasonic according to the test standards:SEP1921-84. | ||
| The flaw detection is ASTM A388 / API 6A PSL3 or SEP1921 /API 6A PSL3. | ||
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| Our steel has passed the following certificates! | ||
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| There are 50000Tons in our stock! | ||
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| Company show! | ||
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| How about the payment terms? | ||
| 1.FOB and L/C is the main payment terms,other payment terms also can accept. | ||
| 2.30% deposits, 70% balance before deliverying. | ||
| 3.MOQ:5 kilograms. |
| Why choose us? | |
| We have Ten years manufacturer experience! | |
| We can provide free samples! | |
| We can produce the steel as your requirest! | |
| We can provide the competitive price! | |
| We can communicate face to face! | |
| We have a wonderful after-sales service! | |
| You will be very happy if you contact us! |
| What's your trading process? | ||
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| How to contact us? | ||
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