{"id":100122,"date":"2026-02-15T20:18:59","date_gmt":"2026-02-15T20:18:59","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100122"},"modified":"2026-07-12T11:37:38","modified_gmt":"2026-07-12T11:37:38","slug":"h2s-material-check","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/hi\/calculators\/h2s-material-check\/","title":{"rendered":"ISO 15156 Material-Qualification Record Checker"},"content":{"rendered":"\r\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Documented ISO 15156 Material-Qualification Record Checker\",\"description\":\"Compare measured hardness and optional yield strength with user-entered documented limits while recording the exact licensed ISO 15156 route and project evidence. 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.15s}.vc-related-link:hover{border-color:var(--vc-accent);color:var(--vc-accent);background:var(--vc-accent-light)}.vc-promo{margin-top:24px;padding:20px;background:linear-gradient(135deg,var(--vc-accent-light),var(--vc-surface));border:1px solid var(--vc-border);border-radius:var(--vc-radius-lg);display:flex;align-items:center;gap:16px}.vc-promo-text{flex:1;font-size:14px;color:var(--vc-ink-secondary)}.vc-promo-text strong{color:var(--vc-ink)}.vc-promo-link{padding:8px 20px;font-size:13px;font-weight:700;color:#fff;background:var(--vc-accent);border-radius:var(--vc-radius);text-decoration:none;white-space:nowrap;transition:background .15s}.vc-promo-link:hover{background:var(--vc-accent-hover)}.vc-footer{text-align:center;padding:32px 16px;font-size:13px;color:var(--vc-ink-muted)}.vc-footer a{color:var(--vc-accent);text-decoration:none}.vc-footer a:hover{text-decoration:underline}.vc-footer-links{margin-top:8px;font-size:12px}.vc-footer-links a{margin:0 8px}@media print{.vc-section-body{max-height:none!important}.vc-faq-a{max-height:none!important}.vc-results{max-height:none!important;padding:24px!important}.vc-copy-btn,.vc-section-chevron,.vc-faq-chevron,.vc-presets,.vc-promo{display:none!important}}.vc-doc-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.vc-wide{grid-column:1\/-1}.vc-result-note{font-size:13px;color:var(--vc-ink-secondary);margin:0}@media(max-width:600px){.vc-doc-grid{grid-template-columns:1fr}.vc-wide{grid-column:auto}}.vc-doc-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.vc-wide{grid-column:1\/-1}.vc-formula-box{font-family:var(--vc-mono);background:var(--vc-surface-alt);border:1px solid var(--vc-border-light);border-radius:6px;padding:14px;margin:12px 0}.vc-record-note{font-size:13px;color:var(--vc-ink-secondary);margin:0}.vc-input[type=\"text\"]{min-height:42px}@media(max-width:600px){.vc-doc-grid{grid-template-columns:1fr}.vc-wide{grid-column:auto}}<\/style>\r\n<div class=\"vc-calculator\" id=\"vc-h2s-record\">\r\n<header class=\"vc-header\"><p class=\"vc-header-eyebrow\">Document-controlled comparison \u2014 no automatic qualification<\/p><h1 class=\"vc-header-title\">ISO 15156 Material-Qualification Record Checker<\/h1><p class=\"vc-header-subtitle\">Record the exact licensed qualification route, material and service basis, then compare a measured hardness value and optional yield strength with limits entered from that controlled source.<\/p><div class=\"vc-badges\"><span class=\"vc-badge\">ISO 15156-1\/-2\/-3:2020<\/span><span class=\"vc-badge\">No alloy-family lookup<\/span><span class=\"vc-badge\">No PASS\/FAIL verdict<\/span><\/div><\/header>\r\n<div class=\"vc-card\"><form class=\"vc-form\" id=\"vc-form\" autocomplete=\"off\"><div class=\"vc-doc-grid\">\r\n<div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-record\">Project \/ record identifier<\/label><input class=\"vc-input\" id=\"vc-record\" type=\"text\" maxlength=\"220\"><\/div>\r\n<div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-standard\">Controlled standard designation and edition<\/label><input class=\"vc-input\" id=\"vc-standard\" type=\"text\" maxlength=\"300\" placeholder=\"e.g. exact project-adopted designation\"><\/div>\r\n<div class=\"vc-field vc-wide\"><label class=\"vc-label\" for=\"vc-route\">Licensed clause, table or qualification route<\/label><input class=\"vc-input\" id=\"vc-route\" type=\"text\" maxlength=\"350\"><\/div>\r\n<div class=\"vc-field vc-wide\"><label class=\"vc-label\" for=\"vc-service\">Equipment, location and service\/application scope<\/label><input class=\"vc-input\" id=\"vc-service\" type=\"text\" maxlength=\"350\"><\/div>\r\n<div class=\"vc-field vc-wide\"><label class=\"vc-label\" for=\"vc-material\">Exact material identifier<\/label><input class=\"vc-input\" id=\"vc-material\" type=\"text\" maxlength=\"400\" placeholder=\"specification, grade\/UNS, heat or lot, product form and condition\"><\/div>\r\n<div class=\"vc-field vc-wide\"><label class=\"vc-label\" for=\"vc-fabrication\">Manufacture and fabrication evidence<\/label><input class=\"vc-input\" id=\"vc-fabrication\" type=\"text\" maxlength=\"450\" placeholder=\"heat treatment, cold work, WPS\/PQR, weld\/HAZ and PWHT records as applicable\"><\/div>\r\n<div class=\"vc-field vc-wide\"><label class=\"vc-label\" for=\"vc-environment\">Design environment and source<\/label><input class=\"vc-input\" id=\"vc-environment\" type=\"text\" maxlength=\"500\" placeholder=\"aqueous phase, H2S basis, pH, temperature, chloride, elemental sulfur, pressure\/composition and exposure as applicable\"><\/div>\r\n<div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-scale\">Hardness scale<\/label><select class=\"vc-select\" id=\"vc-scale\"><option value=\"\">Select\u2026<\/option><option value=\"HRC\">HRC<\/option><option value=\"HV\">HV<\/option><option value=\"HBW\">HBW<\/option><\/select><\/div>\r\n<div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-measured\">Measured hardness<\/label><input class=\"vc-input\" id=\"vc-measured\" type=\"text\" inputmode=\"decimal\" maxlength=\"80\"><\/div>\r\n<div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-limit\">Documented maximum hardness <span class=\"vc-label-hint\">(same scale)<\/span><\/label><input class=\"vc-input\" id=\"vc-limit\" type=\"text\" inputmode=\"decimal\" maxlength=\"80\"><\/div>\r\n<div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-hardness-source\">Hardness report, method and location<\/label><input class=\"vc-input\" id=\"vc-hardness-source\" type=\"text\" maxlength=\"400\"><\/div>\r\n<div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-yield-measured\">Measured\/specified yield strength <span class=\"vc-label-hint\">(MPa, optional pair)<\/span><\/label><input class=\"vc-input\" id=\"vc-yield-measured\" type=\"text\" inputmode=\"decimal\" maxlength=\"80\"><\/div>\r\n<div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-yield-limit\">Documented maximum yield strength <span class=\"vc-label-hint\">(MPa, optional pair)<\/span><\/label><input class=\"vc-input\" id=\"vc-yield-limit\" type=\"text\" inputmode=\"decimal\" maxlength=\"80\"><\/div>\r\n<div class=\"vc-field vc-wide\"><label class=\"vc-label\" for=\"vc-review\">Competent reviewer \/ approval reference<\/label><input class=\"vc-input\" id=\"vc-review\" type=\"text\" maxlength=\"350\"><\/div>\r\n<\/div><p id=\"vc-error\" role=\"alert\" style=\"margin:.75rem 0 0;color:#b42318\"><\/p><div class=\"vc-warning-box\"><p style=\"margin:0\"><strong>Applicability gate:<\/strong> this page does not select an alloy, determine a sour\/non-sour domain, reproduce ISO tables or certify compliance. The entered limits and route must come from the licensed edition adopted by the project and be checked by a competent materials\/corrosion engineer.<\/p><\/div><\/form>\r\n<div class=\"vc-results\" id=\"vc-results\" aria-live=\"polite\"><div class=\"vc-results-head\"><h2 class=\"vc-results-title\">Documented arithmetic comparison<\/h2><button type=\"button\" class=\"vc-copy-btn\" id=\"vc-copy-btn\">Copy<\/button><\/div><div class=\"vc-result-grid\">\r\n<div class=\"vc-rcard vc-rcard-primary\"><div class=\"vc-rcard-label\">Qualification decision<\/div><div class=\"vc-rcard-value\" id=\"vc-r-decision\">Not generated<\/div><\/div>\r\n<div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Hardness relation to entered limit<\/div><div class=\"vc-rcard-value\" id=\"vc-r-hardness\">\u2014<\/div><\/div>\r\n<div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Hardness arithmetic difference<\/div><div class=\"vc-rcard-value\" id=\"vc-r-hardness-diff\">\u2014<\/div><\/div>\r\n<div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Yield-strength relation<\/div><div class=\"vc-rcard-value\" id=\"vc-r-yield\">\u2014<\/div><\/div>\r\n<div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Record status<\/div><div class=\"vc-rcard-value\" id=\"vc-r-record\">\u2014<\/div><\/div>\r\n<\/div><p class=\"vc-record-note\" id=\"vc-r-note\"><\/p><\/div><\/div>\r\n\r\n<div class=\"vc-section vc-open\"><button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"true\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udcd8<\/span><span class=\"vc-section-title\">Formula, scope and current standards<\/span><\/span><\/button><div class=\"vc-section-body\"><div class=\"vc-section-inner vc-theory\">\r\n<h3>Implemented arithmetic<\/h3><div class=\"vc-formula-box\">\u0394H = H<sub>limit, entered<\/sub> \u2212 H<sub>measured<\/sub><br>\u0394R<sub>p<\/sub> = R<sub>p, limit, entered<\/sub> \u2212 R<sub>p, measured<\/sub> (optional)<\/div><p>The tool reports only whether each measured number is numerically at\/below or above the user-entered number. The hardness values must use the same scale; no HRC\/HV\/HBW conversion is performed. A nonnegative difference is not a material-qualification verdict and does not resolve test uncertainty, specimen\/location coverage, weld\/HAZ mapping or all other conditions in the selected route.<\/p>\r\n<h3>Published editions and revision status<\/h3><p>As checked on 12 July 2026, the published series is <a href=\"https:\/\/www.iso.org\/standard\/79658.html\" target=\"_blank\" rel=\"noopener\">ISO 15156-1:2020<\/a>, <a href=\"https:\/\/www.iso.org\/standard\/79659.html\" target=\"_blank\" rel=\"noopener\">ISO 15156-2:2020<\/a> and <a href=\"https:\/\/www.iso.org\/standard\/79660.html\" target=\"_blank\" rel=\"noopener\">ISO 15156-3:2020<\/a>, each edition 4. ISO marks them published and to be revised. The replacement projects <a href=\"https:\/\/www.iso.org\/standard\/88381.html\" target=\"_blank\" rel=\"noopener\">ISO\/DIS 15156-2<\/a> and <a href=\"https:\/\/www.iso.org\/standard\/88382.html\" target=\"_blank\" rel=\"noopener\">ISO\/DIS 15156-3<\/a> remain under development and are not substituted here for the published editions. AMPP lists the combined US adoption as <a href=\"https:\/\/content.ampp.org\/standards\/book\/1139\/ANSI-NACE-MR0175-Petroleum-and-Natural-Gas\" target=\"_blank\" rel=\"noopener\">ANSI\/NACE MR0175-2021\/ISO 15156:2020<\/a>.<\/p>\r\n<h3>What the official scope supports<\/h3><p>Part 1 covers selection and qualification of metallic materials for H\u2082S-containing environments in oil\/gas production and natural-gas sweetening plants. It supplements rather than replaces design codes and is not necessarily applicable to refining or downstream equipment. Part 2 addresses carbon\/low-alloy steels and cast irons for SSC, SOHIC\/SZC and HIC\/SWC; Part 3 addresses CRAs and other alloys for SSC, SCC and GHSC. Parts 2 and 3 concern cracking, not general or localized material loss.<\/p>\r\n<h3>Why the former automatic screen was removed<\/h3><p>The former script assigned one hardness limit to broad families such as \u201caustenitic stainless\u201d, \u201cnickel alloy\u201d and \u201cCRA general\u201d, assigned a universal carbon-steel yield limit, classified the environment from H\u2082S partial pressure alone and could display an automatic positive screening conclusion. Exact alloy chemistry\/UNS, product form, processing, heat treatment, cold work, weld condition, exposure and the full environmental\/design basis were not evaluated. Its table values and clause routes require a licensed controlled source and cannot be reconstructed from ISO catalogue abstracts.<\/p>\r\n<div class=\"vc-warning-box\"><p style=\"margin:0\"><strong>Required engineering review:<\/strong> verify the exact project-adopted edition, maintenance interpretations\/errata, material route, environmental limits, fabrication condition, test method and acceptance rule. Also assess corrosion mechanisms and design-code requirements outside ISO 15156&#8217;s cracking scope.<\/p><\/div>\r\n<\/div><\/div><\/div>\r\n<footer class=\"vc-footer\"><p>\u00a9 2024\u20132026 <a href=\"https:\/\/vibromera.eu\/\">Vibromera<\/a><\/p><p>Documented comparison only \u2014 not material selection, sour-service classification or certification. Scientific review: July 2026.<\/p><\/footer><\/div>\r\n<script>(function(){'use strict';function $(id){return document.getElementById(id)}var ids={sr_record:'vc-record',sr_standard:'vc-standard',sr_route:'vc-route',sr_service:'vc-service',sr_material:'vc-material',sr_fabrication:'vc-fabrication',sr_environment:'vc-environment',sr_scale:'vc-scale',sr_measured:'vc-measured',sr_limit:'vc-limit',sr_hardness_source:'vc-hardness-source',sr_yield_measured:'vc-yield-measured',sr_yield_limit:'vc-yield-limit',sr_review:'vc-review'};function num(raw){var s=String(raw).trim().replace(',','.');if(s.length>80||!\/^[-+]?(?:\\d+(?:\\.\\d*)?|\\.\\d+)(?:[eE][+-]?\\d+)?$\/.test(s))return NaN;return Number(s)}function fmt(v){if(!Number.isFinite(v))return'\u2014';if(v===0)return'0';return Number(v.toPrecision(12)).toString()}function clear(){['vc-r-hardness','vc-r-hardness-diff','vc-r-yield','vc-r-record'].forEach(function(id){$(id).textContent='\u2014'});$('vc-r-decision').textContent='Not generated';$('vc-r-note').textContent='';$('vc-results').classList.remove('vc-visible')}function fail(message){clear();$('vc-error').textContent=message}function setUrl(){var u=new URL(location);Object.keys(ids).forEach(function(q){var v=$(ids[q]).value.trim();if(v)u.searchParams.set(q,v);else u.searchParams.delete(q)});history.replaceState(null,'',u.toString())}function calc(){setUrl();var values={};Object.keys(ids).forEach(function(q){values[q]=$(ids[q]).value.trim()});var any=Object.keys(values).some(function(q){return values[q]});if(!any){$('vc-error').textContent='';clear();return}var required=['sr_record','sr_standard','sr_route','sr_service','sr_material','sr_fabrication','sr_environment','sr_scale','sr_measured','sr_limit','sr_hardness_source','sr_review'];for(var i=0;i<required.length;i++){if(!values[required[i]]){fail('Complete every required provenance, material, environment, hardness and review field.');return}}if(['HRC','HV','HBW'].indexOf(values.sr_scale)<0){fail('Select a valid hardness scale.');return}var measured=num(values.sr_measured),limit=num(values.sr_limit);if(!Number.isFinite(measured)||!Number.isFinite(limit)){fail('Hardness values must be complete finite decimal numbers.');return}if(measured<0||limit<=0||measured>10000||limit>10000){fail('Hardness must be nonnegative, the entered limit positive, and both no greater than 10000.');return}var ymRaw=values.sr_yield_measured,ylRaw=values.sr_yield_limit;if((ymRaw&&!ylRaw)||(!ymRaw&&ylRaw)){fail('Enter both optional yield-strength values or leave both blank.');return}var yd=null,ym=null,yl=null;if(ymRaw&&ylRaw){ym=num(ymRaw);yl=num(ylRaw);if(!Number.isFinite(ym)||!Number.isFinite(yl)){fail('Yield-strength values must be complete finite decimal numbers.');return}if(ym<0||yl<=0||ym>1e7||yl>1e7){fail('Yield strength must be nonnegative, the entered limit positive, and both no greater than 10\u2077 MPa.');return}yd=yl-ym}var hd=limit-measured;$('vc-error').textContent='';$('vc-r-hardness').textContent=measured<=limit?'Measured value \u2264 entered limit':'Measured value > entered limit';$('vc-r-hardness-diff').textContent=fmt(hd)+' '+values.sr_scale+' points (entered limit \u2212 measured)';$('vc-r-yield').textContent=yd===null?'Not compared':(ym<=yl?'Measured\/specified value \u2264 entered limit; \u0394 = '+fmt(yd)+' MPa':'Measured\/specified value > entered limit; \u0394 = '+fmt(yd)+' MPa');$('vc-r-record').textContent='Required fields complete';$('vc-r-decision').textContent='Not generated \u2014 engineering review required';$('vc-r-note').textContent='Record '+values.sr_record+' | '+values.sr_standard+' | Route: '+values.sr_route+' | Material: '+values.sr_material+' | Reviewer: '+values.sr_review+'. 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