HIGH PURITY HIGH POLISHABILITY CORROSION-RESISTANT PLASTIC TOOL STEEL AISI 42 46-5 HRC GS-83 & GS-1 36 48-52 HRC GS621
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
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 8 7 6 5 4 3 2 1 1 nitric acid (5%) ( ) acetic acid (5% boiling) 2 3 4 5 6 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 24 21 18 15 12 9 6 3 1 2 3 4 5 6 o tempering temperature in C
DIN-Code DIN : AISI 代 号 1.283 ( 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.37 13.5 + 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 ＧＳ ０８３ ＥＳＲ和ＧＳ １３６ ＥＳＲ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 11.1 11.4 11.8 Annealed 退 火 QT 淬 硬 Thermal conductivity 热导率 W/(m? K) Density 密度 11.1 C温 度 11.5 11.6 1 C 15 C 2 C 25 C 3 C Annealed 退 火 28.4 28.6 28.8 29.2 29.6 QT 淬 硬 22.5 23.1 23.5 24.4 at 2 C room temperature 7.75kg/dm 3 25.7 2 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 1 2 3 4 5 6 HRC 硬度 56 55 52 51 52 4 Tempering 回火
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. 136 - 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???
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 18 32 grain in stages up to 5 grain on linen 325 15 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 2232 45 µ m diamond grain on wood/copper ard h 45 15 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: 26-4-18