Thermal Stability (Most Critical)
lity granite has a thermal expansion coefficient of \u22640.8\u20133\u00d710\u207b\u2076\/\u2103<\/strong> (only 1\/3\u20131\/4 that of steel).
idden Value: Minimal dimensional deformation during temperature fluctuations. For example, with a temperature difference of 5\u2103, a 1m length deforms by nly 0.001\u03bcm, far below the 0.003\u03bcm of ordinary materials, avoiding datum drift caused by thermal expansion and contraction.
Precision Impact: The instrument maintains micron-level measurementistency even under workshop\/laboratory temperature fluctuations.
Structural Stability (No Internal Stress)
High-quality granite has undergone hundreds of millions of years of geological action, with internal stress ful eliminating the need for artificial aging treatment.
Hidden Value: No warping or deformation during long-term use; 5-year precision drift is **\u22640.al typically \u22651\u03bcm).
Precision Impact: The instrument’s datum surface remains stable long-term, extending calibration cycles from half a year to 2 years, significantly reducing maintenance costs acision risks.
Density and Uniformity
Density *\u22652.7g\/cm\u00b3<\/em>*, with a dense and uniform crystal structure.
Hidden Value: High rigidity and resistance to deformatiotion damping capability is 40% better than cast iron.
Precision Impact: Reduces errors caused by external vibrations and self-motion, improving dynamic measurement stability.<\/li>\n\n\n\n
High-precision machining is a major component of the price and directly determines the instrument’s geometric precision.
Precision Grades and Processes
Fdinary Grade B to metrological Grade AA, prices increase exponentially.
Hidden Value: Flatness\/parallelism\/perpendicularity reaches 0.1\u20131\u03bcm\/m, with sce roughness Ra\u22640.02\u03bcm.
Precision Impact: As the datum platform\/bed for CMMs, lithography machines, and inspection equipment, it directly determines te precision of measurement and processing.
Constant Temperature and Humidity Machining Environment
High-priced products undergo final grinding in workshops with a constant temperature of **\u00b10.Hidden Value: Eliminates thermal deformation during machining, ensuring final precision and consistency with factory specifications.
Precision Impact: No secondary precision adjustments are required after installation; the instrument reaches precision immeupon startup.<\/li>\n\n\n\n
The hidden value of high-priced granite lies in its non-decaying precision during lose, reducing overall costs.
Duret\u00e9 \u00e9lev\u00e9e et r\u00e9sistance \u00e0 l'usure
Mohs hardness 6\u20137, with wear of \u22640.3\u03bcm<\/strong> over 1ears, and no metal fatigue.
Hidden Value: Surface precision remains almost unchanged during long-term high-frequency use.
Precision Impact: The instrument does not require replacement of datum componets for 10\u201320 years, avoiding precision degradation caused by wear.
Corrosion Resistance and Maintenance-Free
Does not rust, is non-conductive, and is resistant to acids and alkHidden Value: No need for rust prevention or lubrication; maintenance costs are reduced to 1\/3 that of metal.
Precision Impact: Reduces disassembly and assembly errors caused by maintenance, maintaining long-term precision stability. <\/li>\n<\/ol>\n\n\n\n
![\"\"](\"https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/02\/9.jpg\")
<\/figure>\n\n\n\nII. Specific Impact Comparison of Price Differences on Instrument Accuracy
Tableau
Dimension Low-cost Ordinary Granite High-cost Premium Precisionanite Impact on Instrument Accuracy
Coefficient of Thermal Expansion 3\u20135\u00d710\u207b\u2076\/\u2103 0.8\u20132\u00d710\u207b\u2076\/\u2103 Error caused bye difference reduced by 50%\u201380%
Long-term Precision Drift \u22651\u03bcm in 5 years \u22640.2\u03bcm in 5 yeark stability improved by 5 times
Vibration Damping Ordinary 40% better than cast iron Dynamic measurement error reduced by 30%
Surface oughness Ra\u22650.1\u03bcm Ra\u22640.02\u03bcm Air-bearing \/ sliding friction error significantly reduced
Service Life 8\u20130 years 15\u201330 years Precision retention cycle extended by 1\u20132 times
Maintenance Cost High (10%\u201315% annually\u20135% annually) Long-term precision assurance cost reduced by 60%.<\/p>\n\n\n\n
III. Quantified Returns of Hidden Value (Regarding Precision and Cost) IV. ConclusPrice \u2260 Cost, Hidden Value = Precision Assurance La valeur cach\u00e9e des prix du granit r\u00e9side dans le fait que, \u00e0 travers trois dimensions \u2014 la stabilit\u00e9 du mat\u00e9riau, la pr\u00e9cision d\u2019usinage et la fiabilit\u00e9 \u00e0 long terme \u2014, il d\u00e9termine directement la pr\u00e9cision statique du rep\u00e8re de r\u00e9f\u00e9rence de l\u2019instrument, sa r\u00e9sistance aux perturbations dynamiques et le maintien de sa pr\u00e9cision \u00e0 long terme, constituant ainsi la garantie fondamentale permettant aux instruments de pr\u00e9cision d\u2019effectuer des mesures stables \u00e0 l\u2019\u00e9chelle du nanom\u00e8tre. I. La valeur cach\u00e9e fondamentale derri\u00e8re le prix (qui influe directement sur la pr\u00e9cision)\u2026<\/p>","protected":false},"author":1,"featured_media":2200,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"none","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"","_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[35],"tags":[],"class_list":["post-2197","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"taxonomy_info":{"category":[{"value":35,"label":"NEWS"}]},"featured_image_src_large":["https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/03\/\u5fae\u4fe1\u56fe\u7247_20230405105854-633x1024.jpg",633,1024,true],"author_info":{"display_name":"jinxing6611@gmail.com","author_link":"https:\/\/jtlcnc.com\/fr\/author\/jtlcnc\/"},"comment_info":0,"category_info":[{"term_id":35,"name":"NEWS","slug":"news","term_group":0,"term_taxonomy_id":35,"taxonomy":"category","description":"","parent":0,"count":311,"filter":"raw","cat_ID":35,"category_count":311,"category_description":"","cat_name":"NEWS","category_nicename":"news","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2197","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/comments?post=2197"}],"version-history":[{"count":1,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2197\/revisions"}],"predecessor-version":[{"id":2201,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2197\/revisions\/2201"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media\/2200"}],"wp:attachment":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media?parent=2197"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/categories?post=2197"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/tags?post=2197"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Precision Returns
Measurement \/ machining accuracy ioved from \u00b10.05mm\/m to \u00b10.03mm\/m<\/strong>.
Value transmission error reduced by 40%, defect rate droppe from 5%\u201310% to 1%\u20133%.
Cost Returns
Equipment life extended from 10 years to 20 years, annual depreciation cost reduced by 50%.tenance cost reduced from 80,000\/year to 15,000\/year, total life cycle cost reduced by 45%.<\/p>\n\n\n\n
The high price of granite is essentially paying for material stability, machining precision, and long-term reliability. These hidden values directly determine the instrumentark accuracy, anti-interference capability, and long-term precision retention, serving as the core foundation for precision instruments to achieve stable measurements at the micron\/nanometer level.
In of precision instruments, the short-term cost advantage of low-cost granite is offset by long-term precision drift, high maintenance costs, and frequent calibration; whereas the hidden value of high-cost pree ultimately translates into lower total life cycle costs and higher precision assurance.<\/p>\n\n\n\n![\"\"](\"https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/01\/\u82b1\u5c97\u5ca9\u6784\u4ef6-22-1024x768.jpg\")
<\/figure>","protected":false},"excerpt":{"rendered":"