--- title: "51B60H — Spring steels" description: "51B60H in AISI / SAE: material number 1.7190, also listed as 58CrMnB4. Category: Spring steels. Designations recorded for this grade: 12." canonical: https://steelequivalents.com/materials/aisi-sae/51b60h language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/aisi-sae/51b60h.md cs: https://steelequivalents.com/cs/materiály/aisi-sae/51b60h.md de: https://steelequivalents.com/de/werkstoffe/aisi-sae/51b60h.md es: https://steelequivalents.com/es/materiales/aisi-sae/51b60h.md fr: https://steelequivalents.com/fr/matériaux/aisi-sae/51b60h.md hu: https://steelequivalents.com/hu/anyagok/aisi-sae/51b60h.md it: https://steelequivalents.com/it/materiali/aisi-sae/51b60h.md nl: https://steelequivalents.com/nl/materialen/aisi-sae/51b60h.md pl: https://steelequivalents.com/pl/materiały/aisi-sae/51b60h.md pt: https://steelequivalents.com/pt/materiais/aisi-sae/51b60h.md ru: https://steelequivalents.com/ru/материалы/aisi-sae/51b60h.md tr: https://steelequivalents.com/tr/malzemeler/aisi-sae/51b60h.md zh: https://steelequivalents.com/zh/材料/aisi-sae/51b60h.md ja: https://steelequivalents.com/ja/材料/aisi-sae/51b60h.md ar: https://steelequivalents.com/ar/المواد/aisi-sae/51b60h.md ko: https://steelequivalents.com/ko/재료/aisi-sae/51b60h.md pt-br: https://steelequivalents.com/pt-br/materiais/aisi-sae/51b60h.md hi: https://steelequivalents.com/hi/सामग्री/aisi-sae/51b60h.md content_hash: sha256:2d9356f696c63d2da01f91a742321998ea52713d432257fc667adfe7f745644f generated: 2026-09-24 --- > **Machine-readable Markdown rendering.** This is a Markdown representation of a web page, > served for AI agents and crawlers as a token-efficient alternative to the full HTML. > Full interactive HTML version: https://steelequivalents.com/materials/aisi-sae/51b60h > Canonical URL: https://steelequivalents.com/materials/aisi-sae/51b60h > Available languages: en, cs, de, es, fr, hu, it, nl, pl, pt, ru, tr, zh, ja, ar, ko, pt-br, hi > Change detection: `content_hash` is the SHA-256 of this document's Markdown body — everything > below this block, whitespace-trimmed, excluding the front-matter. Compare it to detect a real > content change; `generated` moves on every render and is not a change signal. AISI / SAE · United States · 12 designations # 51B60H 51B60H is a designation in AISI / SAE for the material held under material number 1.7190, also listed as 58CrMnB4. It is a material in the category Spring steels. We list 12 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ISO, JIS, GB, GOST and BDS. - [*Material no.* **1.7190**](/materials/material-no/1.7190 "Material no.: 1.7190") - [*Category* **Spring steels · 52 grades**](/categories/spring-steels "Category: Spring steels · 52 grades") - *Designations* **12** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=7d03496e-6771-4bef-91ca-e40d05f8933c&designation=7d06aca3-ccf4-4e20-80f8-496ee83277e6 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/aisi-sae/51b60h.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [UNS H51601 This grade’s own name](/materials/uns/h51601 "UNS H51601") ## About Spring steels Spring steels are alloy steels designed to store and release elastic energy repeatedly without permanent deformation. They are characterised by a combination of strength, hardness and resilience, making them suitable for springs, clips, washers and other components subjected to repeated flexing or shock. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 12 designations · 8 standards · nothing hidden This grade’s own name recorded in our sources as this grade’s own designation under that standard. Indicative taken from a published cross-reference table; a close match, not a guarantee of interchangeability. Verify against the mill certificate before ordering. Withdrawn designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once. DIN / EN Europe · 1 - [58CrMnB4 This grade’s own name Withdrawn](/materials/din-en/58crmnb4 "DIN / EN 58CrMnB4") UNS United States · 2 - [G51601 Indicative](/materials/uns/g51601 "UNS G51601") - [H51601 This grade’s own name](/materials/uns/h51601 "UNS H51601") AISI / SAE United States · 3 - [51B60 Indicative](/materials/aisi-sae/51b60 "AISI / SAE 51B60") - **51B60H This grade’s own name** - [H51601 Indicative](/materials/uns/h51601 "AISI / SAE H51601") ISO International · 1 - [60CrB3 Indicative](/materials/iso/60crb3 "ISO 60CrB3") JIS Japan · 1 - [SUP11A Indicative](/materials/jis/sup11a "JIS SUP11A") GB China · 1 - [60CrMnBA Indicative](/materials/gb/60crmnba "GB 60CrMnBA") GOST Russia / CIS · 2 - [55KHGR Indicative](/materials/gost/55khgr "GOST 55KHGR") - [55ХГР Indicative](/materials/gost/55khgr "GOST 55ХГР") BDS Bulgaria · 1 - [55ChGR Indicative](/materials/bds/55chgr "BDS 55ChGR") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 4 elements on file · weight % What this alloy is Fe Mn Cr C Iron — the balance, never listed by a standard — 97.2 % Mn — 1 % Cr — 0.9 % C — 0.6 % Traces & impurities · 0.3 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.58 | | Si | 0.3 | | Mn | 1 | | Cr | 0.9 | Carbon Silicon Manganese Chromium 0.01 % 0.1 % 1 % 10 % 100 % The scale is logarithmic, not the element’s raw share of the alloy — the only honest way to fit 0.01 % and 100 % in one picture, and it means every value here can be compared with every other. | Element | As published source text, verbatim | Min% by weight | Max% by weight | Bound | |---|---|---|---|---| | C | 0,58 | 0.580 | 0.580 | Exact | | Si | 0,3 | 0.300 | 0.300 | Exact | | Cr | 0,9 | 0.900 | 0.900 | Exact | | Mn | 1 | 1.000 | 1.000 | Exact | The published column is the source string byte-for-byte, decimal comma and all; Min and Max are the parsed bounds. Elements not listed have no value on file — they are omitted, never inferred. ## Predicted transformation temperatures Not enough recorded composition to predict a transformation temperature for this grade — missing: Ni, Mo. ## Physical & mechanical properties Density 7,85 g/cm³ Exact Transformation point Ac1 750 °C Exact Transformation point Ac3 790 °C Exact · Ac3(Acm) An absent property means we hold no value for it — it is left out rather than estimated, interpolated from a neighbouring grade, or filled from a handbook. It does not mean the property is undefined for the material. ## Properties by condition 2 conditions · 6 values By delivery state**no delivery state stated** source `splav` | Delivery state | HB | |---|---| | (without heat treatment) , Rolled stock GOST 14959-79 | 302 | | (heat treatment) , Rolled stock GOST 14959-79 | 269 | By heat-treated condition**no delivery state stated** source `splav` | Heat-treated condition | Rm N/mm² | Re N/mm² | A5% | Z% | |---|---|---|---|---| | Rolled stock, GOST 14959-79 | 1270 | 1175 | 7 | 35 | Every figure holds only for the condition on its own row. Values are never merged across conditions or across sources, never averaged, and never interpolated between two rows. An em dash means no value on file — never zero. Figures are converted to the unit in the column header; the source’s own wording is kept and shown where the two differ. ## Similar grades — and why Selection rule, stated so you can disagree with it: same number class 1.7, a shared category, and a published range for Mn / Cr that overlaps this grade’s. These are neighbours in composition space — they are not equivalents, and none is claimed to be interchangeable with this grade. [1.7176 1.7176 Mn 0,70-1,00 · Cr 0,70-1,00 - ΔMn 0.15 - ΔCr 0.05 - 47 designations](/materials/material-no/1.7176 "1.7176")[52CrMoV4 1.7701 Mn 0,70-1,10 · Cr 0,90-1,20 - ΔMn 0.10 - ΔCr 0.15 - 5 designations](/materials/din-en/52crmov4 "52CrMoV4") ## Looking for this grade under another name? Search the catalogue by designation, material number or composition — every name on this page is itself a way in. [Search](/search "Steel grade search")[Inquiry](/inquiry?material=7d03496e-6771-4bef-91ca-e40d05f8933c&designation=7d06aca3-ccf4-4e20-80f8-496ee83277e6 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/aisi-sae/51b60h.pdf "Datasheet as PDF")