The New High-grade ste el for plasti c moulding 最 新 发 展P 2 0级 高 强 度 塑 料 模 具 钢 GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT G GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT 7 -S GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT E 83 33 T H HR 8 3 C- C R H GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS 738 EHT GS06018 A steel that takes you into a new world of design, quality and cost-efficiency A targeted development to meet increasing demands Larger components, more complex moulds, even more exacting surfaces the demands imposed on the mould-making and plastics industries are growing all the time. What they need is a steel that is not only very hard, but also easy to machine. GS738 EHT is a new, high-tech steel developed on the basis of our successful GS-311 and GS-738 grades for plastic moulding and geared precisely to these tougher demands. Targeted modification of the composition and additional measures in smelting and secondary metallurgy lend it properties unlike those of any steel before it. GS-2738 EHT 1.2738 1.2311 Hardness/Strength GS-738 EHT stands for excellent product quality and dependable production. GS-738 EHT offers major improvements, especially for the construction of relatively large and complicated moulds: ? Greatly improved through-hardenability ? Uniform hardness down to the core ? Good machinability ? Optimum suitability for polishing and texturing Compared to the steel grades commonly used in the past, it also displays substantially improved weldability and greatly increased thermal conductivity. This new steel takes you into a new world of size, design, product quality and, above all, dependable production and cost-efficiency. Hardness supplied:310-355HB Strength supplied:1050-1200N/MM2 Advantages for the mould-maker ? One material for virtually all moulds ? Good machinability ? Optimum suitability for polishing and texturing ? Improved weldability 市场追求的目标 超大型的塑料模具,复杂的型框,精准度高 的模面,都是市场不断更新的目标。模具制 造厂对模具钢材的要求也与时俱进,塑料模 具钢材不单要求更高硬度,也要求易加工。 GS-738 EHT 是最新开发的高科技产品,根 据 多 年 来 成 功 的GS311及GS738,再 加 上 新 的熔炼工艺,新的锻造概念,开发史无前例 的高质量预硬塑料模具钢材。 Advantages for the tool user ? Uniform hardness down to the core, resulting in improved parting-line robustness of the mould ? Higher productivity due to improved thermal conductivity ? Higher product quality due to improved polishing and texturing properties ? Greater wear resistance due to supply of hardnesses up to 355 HB ? Improved repair weldability ? Longer service life due to uniform hardness down to the core GS-738 ETH is the optimum material for virtually every mould needed for injection moulding in the plastics industry. Take advantage of competent advice, joint material development and short delivery periods. GS738 EHT 的优点可以例举如下: ? 高淬透性 ? 高精光度及光蚀性 ? 高平均切面硬度 ? 易焊接 ? 易切削 ? 优良传热性能 + + + + + +++++ ++ ++ ~ 2798 DIN-Code : P20 mod. AISI 代号 Chemical Composition 化学成份 (Typical analysis in %) (典型分析结果 %) Delivery condition: 出厂状态: max.hardness 33-38HRC 最高硬度: Mn锰 1.5 C碳 0.28 Ni镍 1.0 Cr铬 1.3 Mo钼 + Steels properties 钢材特性 Prehardened plastic mould steel, hardness in as-supplied condition 310-355 HB. Improved through-hardening in comparison with GS-738 . Good machinability, polishability and weldability, suitable for texturing. 预硬塑胶模钢,供货硬度一般为310-355HB,比 GS-738有所改进。良好的机械加工性能,良好的 抛光性能和良好的焊接性能。 Applications 用途 GS-738 EHT is particularly suitable for large plastic injection and compression moulds with deep engravings and high demands on core strength, e.g. for bumper bar moulds, moulds for tailgates, wings, spoilers, instrument panels, TV housings and much mode. 特别适用于进行深加工和高强度需求的大型注射和 压缩塑胶模。例如缓冲架模具,后档板、机翼、 面板工具电视外壳等机壳模具。 Physical Properties 物 理性能 C 温度 Coefficient of thermal expansion 热膨胀系数 1 0-6x m/ ( m. k) o Thermal conductivity 热传率 W / ( m. k) o 20-100 oC 20-200 oC 20-300 oC 20-400 oC 20-500 oC 20-600 oC 20-700 oC 11.8 C 温度 12.5 13.1 o 14.1 o 14.3 o 20 C 350 C 700 C 38.0 37.4 33.0 at 20 oC room temperature 7.75 kg/dm 3 Density 密度 13.8 13.5 20 oC室温约值7.75kg/dm 3 Heat treatment 热处理 Soft annealing oC 软性退火 ( 710-730 oC) Hardening oC 硬化 ( 880 oC) Polymer, oil , salt bath 淬火剂, 油, 盐浴 O Tempering 回火 Hardness HB 硬度 max. 最大值: 235 Furnace cooling 随炉缓冷 C HRC N/mm 2 HRC 硬度 N/mm 2 50 1670 100 200 300 400 500 600 700 50 50 49 47 44 37 24 1670 1670 1630 1530 1400 1175 835 Tempering diagram 70 66 62 Hardness in HRC 58 54 50 46 42 38 34 30 0 - 200 100 300 400 500 600 700 800 Tempering temperature in ℃ 香港:香港新界沙田火炭黄竹洋街14-18号华生工业大厦地下一室 东莞:广东省东莞市虎门镇新联村(523917) 江苏:江苏省太仓市直塘镇直水路9889号(215417) 浙江:浙江省宁海经济开发区新兴工业园 (315600) 电话:00852-26990339 电话:0769-85521777 85524209 85500365 电话:0512-53253271 53253272 电话:0574-65530928 65530972 传真:00852-26024765 传真:0769-85524174 传真:0512-53253273 传真:0574-65530973 Print Date: 2006-04-18
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