GS-083ESR

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邑祁
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1 HIGH PURITY HIGH POLISHABILITY CORROSION-RESISTANT PLASTIC TOOL STEEL AISI HRC GS-83 & GS HRC GS621

2 GS-83 GS-83 is an important member of the high chromium stainless tool steel, and was produced by the electro-slag remelting process with high purity and homogeneity structure. For GS-83, after heat-treatment, the application hardness is from 46 HRC to 48 HRC. GS-136, the application hardness is 48 HRC to 52 HRC. For extra high polish, we can supply GS-136 materials, with improved micro-structure and chemical composition. GS-83 是防腐蚀塑模钢的主流产品要达到高纯度高精光度及适当韧性电渣重熔轧制工艺是不可以缺少经热处理后应用硬度是46 HRC至48 HRC GS-136 应用硬度是48 HRC至52 HRC 在超高精光度的要求我厂提供GS- 136 是GS-83 的改良型 Characteristic of GS-83 can be summarised as follow : - High polishability - Good corrosion and rust resistance - Good wear resistance - Good machinability at annealed condition - Through hardenability - Good photo-etching properties GS-83 的优点是高精光度良好防腐蚀性能良好耐磨性能退火交货有良好加工性能热处理淬火渗透性强 Electro-Slag remelt 电渣重溶炉 GS-83 GS-83 GS-83 GS-83 GS-83 GS-83

3 Corrosion Resistance GS 83 provides good corrosion resistance and rust prevention properties, however high tempering temperature will drastically reduce the corrosion resistance. GS-83 weight loss rate in g/hqm nitric acid (5%) ( ) acetic acid (5% boiling) o tempering temperature in C Toughness Toughness of GS-83 is also affected by the tempering temperature as well as the austenizing temperature. For best performance, please consult our heat treatment department. GS-83 Impact energy in J o tempering temperature in C

4 DIN-Code DIN : AISI 代号 ( 42 ) Soft annealed 经退火处理 Delivery condition : 出厂状态 max 23 HB 最高硬度 23 HB Chemical Composition 化学成分 : C碳 Cr铬 Others 其它 (Typical analysis in %) (典型分析结果 Corrosion-resistant, good polishability. Steel properties 钢材特性 Application 用途 GS-83 & GS-136 are used for moulds that required stringent mirror surface finishing, such as lens of camera and optical instrument. Also, it can be used for the manufacturing of durable moulds such as the casing of compact dies, mini-floppy disk and cassette tape, and plastic medical parts etc. Physical Properties 物理性能ＧＳ０８３ＥＳＲ和ＧＳ１３６ＥＳＲ是高级抗腐模钢适合用在光学仪器产品如相机镜头眼镜等此外这种钢可用来制造一些耐用的镜面模具如镭射唱片外壳３寸半磁碟包装盒及卡式录音带盒及塑料医疗用品等 (GS-83 ) Coefficient of thermal expansion 热膨胀系数抗腐蚀优良抛光性能 1 X m/(m? K) C温度 2-1 C 2-2 C 2-3 C Annealed 退火 QT 淬硬 Thermal conductivity 热导率 W/(m? K) Density 密度 11.1 C温度 C 15 C 2 C 25 C 3 C Annealed 退火 QT 淬硬 at 2 C room temperature 7.75kg/dm C 室温约值7.75kg/dm 3 Heat treatment 热处理 Soft annealing C 软性退火 76 8 Furnace Cooling 炉中冷却 Hardness HB 硬度 max. 最大值 23 Hardening C 硬化 1-15 Quenching medium 淬火剂 oil or hot bath 油或热浴 5-55 C Hardness after quenching HRC 硬度 56 C 温度 HRC 硬度 Tempering 回火

5 Polishability Even though GS-136 materials have high polishability properties, attention should be made to the correct method of processing to achieve the result anticipated High intensity EDM process will usually damage the materials surface, and the white layer on the surface should be removed by either mechanical means or by fine EDM to ensure an uniform materials structure before polishing. - Proper heat treatment process should be carried out to achieve a fine grain structure with minimum retained austenite.hardness after heat treatment should be above 52 HRC and hardness deviation on the surface should be kept to below ±1 HRC. 52HRC - Polishing should be done with sufficient lubricant and time to be kept at short intervals to avoid over polishing. upto grain size 32 polishing stone upto grain size 8 polishing powder upto 1 ìm diamond paste???

6 Polishability of various steel grades for plastic mould 1% Excellent Good Normal Moderate Poor = Not Polishable GS 162 GS 83HP GS-767 GS 343EFS GS-738 GS-316 GS-842 GS-379 We recommend the following worksteps for our steels for plastic moulding Workstep 1. Pre-machining 2. Rough grinding 3. Fine grinding 4. Polishing Steels for plastic moulding Hardness approx 3 HB / 32 HRC Milling, turning, EDM 18 grain grain in stages up to 5 grain on linen µ m diamond grain 15 6 µ m diamond grain on felt or fibrous material 6 Steels for plastic moulding Hardness approx 54 HRC Milling, turning, EDM 18 grain on paper or linen 22 grain in stages up to 32 grain on linen µ m diamond grain on wood/copper ard h µ m diamond grain on fibrous material medium) 15 6 µ m diamond grain 6 3 and 1 µ m diamond grain on texiles/felt for extreme demands(soft) Print Date:

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A B ICS 77.140.01 H 40 GB GB/T 20566-2006 Terminology of steel and alloy 2006-11-01 2007-02-01 A B 1 2 GB/T 13304 GB/T 13304-1991,neq ISO 4948/1 1982 Steel-classification-Part 1 classification of steels into