--- title: "45L — Cold extrusion steels" description: "45L in GOST: material number 1.1192, also listed as C45EC. It is a material in the category Cold extrusion steels. Designations recorded for this grade: 14." canonical: https://steelequivalents.com/materials/gost/45l language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gost/45l.md cs: https://steelequivalents.com/cs/materiály/gost/45l.md de: https://steelequivalents.com/de/werkstoffe/gost/45l.md es: https://steelequivalents.com/es/materiales/gost/45l.md fr: https://steelequivalents.com/fr/matériaux/gost/45l.md hu: https://steelequivalents.com/hu/anyagok/gost/45l.md it: https://steelequivalents.com/it/materiali/gost/45l.md nl: https://steelequivalents.com/nl/materialen/gost/45l.md pl: https://steelequivalents.com/pl/materiały/gost/45l.md pt: https://steelequivalents.com/pt/materiais/gost/45l.md ru: https://steelequivalents.com/ru/материалы/gost/45l.md tr: https://steelequivalents.com/tr/malzemeler/gost/45l.md zh: https://steelequivalents.com/zh/材料/gost/45l.md ja: https://steelequivalents.com/ja/材料/gost/45l.md ar: https://steelequivalents.com/ar/المواد/gost/45l.md ko: https://steelequivalents.com/ko/재료/gost/45l.md pt-br: https://steelequivalents.com/pt-br/materiais/gost/45l.md hi: https://steelequivalents.com/hi/सामग्री/gost/45l.md content_hash: sha256:2cf93974bdc49dd0652e8eabb0882c9134c40c39a66c5c68d2c435a47d977511 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/gost/45l > Canonical URL: https://steelequivalents.com/materials/gost/45l > 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. GOST · Russia / CIS · 14 designations # 45L 45L is a designation in GOST for the material held under material number 1.1192, also listed as C45EC. It is a material in the category Cold extrusion steels. We list 14 designations recorded for this grade, in the standards DIN / EN, GB and GOST. - [*Material no.* **1.1192**](/materials/material-no/1.1192 "Material no.: 1.1192") - [*Category* **Cold extrusion steels · 156 grades**](/categories/cold-extrusion-steels "Category: Cold extrusion steels · 156 grades") - *Designations* **14** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=5adaa669-516d-4014-b207-f3232f5413e5&designation=64a21475-8f80-4625-8472-5f6b5559dadd "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/45l.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN C45EC This grade’s own name](/materials/din-en/c45ec "DIN / EN C45EC") - [GB 45 This grade’s own name · 7 grades on that route](/materials/gb/45 "GB 45") ## About Cold extrusion steels Cold extrusion steels are engineering materials designed to be shaped into components by cold forming and extrusion. They combine the ductility needed for substantial plastic deformation with the strength and toughness required in cold-formed fasteners, automotive parts and other precision components. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 14 designations · 3 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 · 3 - [C45EC This grade’s own name](/materials/din-en/c45ec "DIN / EN C45EC") - [CF45 Indicative](/materials/din-en/cf45 "DIN / EN CF45") - [Cq 45 This grade’s own name Withdrawn](/materials/din-en/cq-45 "DIN / EN Cq 45") GB China · 1 - [45 This grade’s own name](/materials/gb/45 "GB 45") GOST Russia / CIS · 10 - [45 Indicative](/materials/gb/45 "GOST 45") - [45FL Indicative](/materials/gost/45fl "GOST 45FL") - [45GL Indicative](/materials/gost/45gl "GOST 45GL") - [45KHN Indicative](/materials/gost/45khn "GOST 45KHN") - [45KHNM Indicative](/materials/gost/45khnm "GOST 45KHNM") - **45L Indicative** - [45T Indicative](/materials/gost/45t "GOST 45T") - [CHVG45 Indicative](/materials/gost/chvg45 "GOST CHVG45") - [VCH45 Indicative](/materials/gost/vch45 "GOST VCH45") - [А45E Indicative](/materials/gost/a45e "GOST А45E") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 6 elements on file · weight % What this alloy is Fe Mn C Si Iron — the balance, never listed by a standard — 98.3 % Mn — 0.7 % C — 0.5 % Si — 0.3 % Traces & impurities · 0.3 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.42–0.5 — Unusual | | Si | ≤ 0.3 | | Mn | 0.5–0.8 | | P | 0.025 | | S | 0.025 | | Cu | ≤ 0.25 | Carbon Silicon Manganese Phosphorus Sulfur Copper 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 | 0,42-0,50 | 0.420 | 0.500 | Range | | Si | ≤0,30 | — | 0.300 | Max | | P | 0,025 | 0.025 | 0.025 | Exact | | S | 0,025 | 0.025 | 0.025 | Exact | | Mn | 0,50-0,80 | 0.500 | 0.800 | Range | | Cu | ≤0,25 | — | 0.250 | Max | 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, Cr, Mo. ## Physical & mechanical properties Rm ≥600 N/mm² Min A ≥17% Min Density 7,85 g/cm³ Exact Transformation point Ac1 730 °C Exact Transformation point Ac3 755 °C Exact · Ac3(Acm) Transformation point Ar3 690 °C Exact · Ar3(Arcm) Transformation point Ar1 780 °C Exact Weldability difficult to weld As published: hard weldability. Flake sensitivity slightly susceptible As published: weakly predisposed Temper brittleness not susceptible As published: not predisposed 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 5 conditions · 63 values By delivery state**no delivery state stated** source `splav` | Delivery state | Rm N/mm² | Re N/mm² | A5% | Z% | HB | |---|---|---|---|---|---| | Pipe, GOST 8731-87 | 588 | 323 | 14 | — | — | | Rolled stock cold-worked , GOST 1050-88 | 640 | — | 6 | 30 | — | | Rolled stock annealed , GOST 1050-88 | 540 | — | 13 | 40 | — | | Band annealed , GOST 2284-79 | 440 – 690 | — | 14 | — | — | | Band cold-worked , GOST 2284-79 | 690 – 1030 | — | — | — | — | | Pipe GOST 8731-87 | — | — | — | — | 207 | | Rolled stock GOST 1050-88 | — | — | — | — | 229 | By heat-treated condition**no delivery state stated** source `splav` | Heat-treated condition | Rm N/mm² | Z% | |---|---|---| | Bar cold-drawn , GOST 10702-78 | 590 | 40 | By dimension**Normalizing** source `splav` | Dimension mm | Rm N/mm² | Re N/mm² | A5% | Z% | |---|---|---|---|---| | to 80 | 600 | 355 | 16 | 40 | By dimension**Normalizing** source `splav` | Dimension mm | Rm N/mm² | Re N/mm² | A5% | Z% | |---|---|---|---|---| | 6 - 60 | 600 | 355 | 16 | 40 | At temperature**no delivery state stated** source `splav` | Temperature °C | Density g/cm³ | Elastic modulus GPa | Thermal expansion coefficient 10^-6/K | Thermal conductivity W/(m·K) | Specific heat capacity J/(kg·K) | |---|---|---|---|---|---| | 20 | 7.826 | 200 | — | — | — | | 100 | 7.799 | 201 | 11.9 | 48 | 473 | | 200 | 7.769 | 193 | 12.7 | 47 | 494 | | 300 | 7.735 | 190 | 13.4 | 44 | 515 | | 400 | 7.698 | 172 | 14.1 | 41 | 536 | | 500 | 7.662 | — | 14.6 | 39 | 583 | | 600 | 7.625 | — | 14.9 | 36 | 578 | | 700 | 7.587 | — | 15.2 | 31 | 611 | | 800 | 7.595 | — | — | 27 | 720 | | 900 | — | — | — | 26 | 708 | 2 further values are held for this grade under a condition the source did not name — a bound with no quantity attached. They are withheld rather than shown against a guessed condition. 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 1.1, a shared category, and a published range for Mn / Si 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. [C35EC 1.1172 Mn 0,50-0,80 · Si ≤0,30 - ΔMn 0.00 - ΔSi 0.00 - 20 designations](/materials/din-en/c35ec "C35EC")[C15E2C 1.1132 Mn 0,30-0,60 · Si ≤0,30 - ΔMn 0.20 - ΔSi 0.00 - 31 designations](/materials/din-en/c15e2c "C15E2C")[C20E2C 1.1152 Mn 0,30-0,60 · Si ≤0,30 - ΔMn 0.20 - ΔSi 0.00 - 41 designations](/materials/din-en/c20e2c "C20E2C") ## 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=5adaa669-516d-4014-b207-f3232f5413e5&designation=64a21475-8f80-4625-8472-5f6b5559dadd "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/45l.pdf "Datasheet as PDF")