<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[Mold Steel Comparison: P20 vs H13 vs S136 vs NAK80：核心技术要点...]]></title><description><![CDATA[<p dir="auto">Steel comparison:<br />
P20: HRC 28-32, general purpose<br />
H13: HRC 45-52, hot work<br />
S136: HRC 48-52, mirror polish<br />
NAK80: HRC 37-43, pre-hardened</p>
<p dir="auto"><img src="https://forum.mj7.cn/assets/plugins/nodebb-plugin-emoji/emoji/android/1f4ce.png?v=ctg9fn65o46" class="not-responsive emoji emoji-android emoji--paperclip" title=":paperclip:" alt="📎" /> <strong>延伸阅读</strong><br />
• <a href="/t/return-pin/617">回针（Return Pin）</a><br />
• <a href="/t/taper-lock/606">锥形精定位（Taper Lock）</a><br />
• <a href="/t/ejector-pin/624">顶针（Ejector Pin）注塑模具用</a></p>
<hr />
<p dir="auto">踩过坑的来评论区说说。</p>
]]></description><link>https://forum.mj7.cn/topic/2910/mold-steel-comparison-p20-vs-h13-vs-s136-vs-nak80-核心技术要点</link><generator>RSS for Node</generator><lastBuildDate>Mon, 10 Aug 2026 04:25:27 GMT</lastBuildDate><atom:link href="https://forum.mj7.cn/topic/2910.rss" rel="self" type="application/rss+xml"/><pubDate>Sun, 31 May 2026 07:10:19 GMT</pubDate><ttl>60</ttl></channel></rss>