--- title: "Gr.1015 — Case hardening steels" description: "Gr.1015 in AISI / SAE: material number 1.1141, also listed as C15E. Category: Case hardening steels. Designations recorded for this grade: 52." canonical: https://steelequivalents.com/materials/aisi-sae/gr-1015 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/aisi-sae/gr-1015.md cs: https://steelequivalents.com/cs/materiály/aisi-sae/gr-1015.md de: https://steelequivalents.com/de/werkstoffe/aisi-sae/gr-1015.md es: https://steelequivalents.com/es/materiales/aisi-sae/gr-1015.md fr: https://steelequivalents.com/fr/matériaux/aisi-sae/gr-1015.md hu: https://steelequivalents.com/hu/anyagok/aisi-sae/gr-1015.md it: https://steelequivalents.com/it/materiali/aisi-sae/gr-1015.md nl: https://steelequivalents.com/nl/materialen/aisi-sae/gr-1015.md pl: https://steelequivalents.com/pl/materiały/aisi-sae/gr-1015.md pt: https://steelequivalents.com/pt/materiais/aisi-sae/gr-1015.md ru: https://steelequivalents.com/ru/материалы/aisi-sae/gr-1015.md tr: https://steelequivalents.com/tr/malzemeler/aisi-sae/gr-1015.md zh: https://steelequivalents.com/zh/材料/aisi-sae/gr-1015.md ja: https://steelequivalents.com/ja/材料/aisi-sae/gr-1015.md ar: https://steelequivalents.com/ar/المواد/aisi-sae/gr-1015.md ko: https://steelequivalents.com/ko/재료/aisi-sae/gr-1015.md pt-br: https://steelequivalents.com/pt-br/materiais/aisi-sae/gr-1015.md hi: https://steelequivalents.com/hi/सामग्री/aisi-sae/gr-1015.md content_hash: sha256:4e819c8f08561017b480108b9c01195ddff8d40ab61b7d877d40f46542c1df69 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/gr-1015 > Canonical URL: https://steelequivalents.com/materials/aisi-sae/gr-1015 > 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 · 52 designations # Gr.1015 Gr.1015 is a designation in AISI / SAE for the material held under material number 1.1141, also listed as C15E. It is a material in the category Case hardening steels. We list 52 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, BS, AFNOR, UNE, ISO, JIS, GB, GOST, UNI, SS, ČSN, STN, PN, HRN, MSZ, AS / NZS, STAS, ÖNORM and SFS. - [*Material no.* **1.1141**](/materials/material-no/1.1141 "Material no.: 1.1141") - [*Category* **Case hardening steels · 60 grades**](/categories/case-hardening-steels "Category: Case hardening steels · 60 grades") - *Designations* **52** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=55fd3ea8-2771-476a-bb22-dee15dc69508&designation=901e2ba5-dca1-4abc-9a54-9a1abc22dbe8 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/aisi-sae/gr-1015.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN C15E This grade’s own name](/materials/din-en/c15e "DIN / EN C15E") - [UNS G10150 This grade’s own name · 8 grades on that route](/materials/uns/g10150 "UNS G10150") - [AISI / SAE 1015 This grade’s own name · 9 grades on that route](/materials/aisi-sae/1015 "AISI / SAE 1015") ## About Case hardening steels Case hardening steels are steels designed to develop a hard, wear-resistant surface while retaining a tough and ductile core. They are used for components such as gears, shafts and other machine parts exposed to contact wear and cyclic loading. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 52 designations · 21 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 · 5 - [1.1141 Indicative](/materials/material-no/1.1141 "DIN / EN 1.1141") - [C15 Indicative](/materials/is/c15 "DIN / EN C15") - [C15E This grade’s own name](/materials/din-en/c15e "DIN / EN C15E") - [Ck 15 This grade’s own name Withdrawn](/materials/snv/ck15 "DIN / EN Ck 15") - [Gr.1016 Indicative](/materials/din-en/gr-1016 "DIN / EN Gr.1016") UNS United States · 2 - [G10150 This grade’s own name](/materials/uns/g10150 "UNS G10150") - [G10170 This grade’s own name](/materials/uns/g10170 "UNS G10170") AISI / SAE United States · 4 - [1015 This grade’s own name](/materials/aisi-sae/1015 "AISI / SAE 1015") - [1017 This grade’s own name](/materials/aisi-sae/1017 "AISI / SAE 1017") - **Gr.1015 Indicative** - [Gr.1016 Indicative](/materials/din-en/gr-1016 "AISI / SAE Gr.1016") BS United Kingdom · 8 - [040A15 Indicative](/materials/bs/040a15 "BS 040A15") - [055M15 Indicative](/materials/bs/055m15 "BS 055M15") - [080A15 Indicative](/materials/bs/080a15 "BS 080A15") - [080M15 Indicative](/materials/bs/080m15 "BS 080M15") - [32C Indicative](/materials/bs/32c "BS 32C") - [C15 C15E C15R Indicative](/materials/bs/c15-c15e-c15r "BS C15 C15E C15R") - [CS17 Indicative](/materials/bs/cs17 "BS CS17") - [EN32C Indicative](/materials/bs/en32c "BS EN32C") AFNOR France · 4 - [C15E Indicative](/materials/din-en/c15e "AFNOR C15E") - [C18RR Indicative](/materials/afnor/c18rr "AFNOR C18RR") - [XC12 Indicative](/materials/afnor/xc12 "AFNOR XC12") - [XC15 Indicative](/materials/afnor/xc15 "AFNOR XC15") UNE Spain · 4 - [C15K Indicative](/materials/une/c15k "UNE C15K") - [C16k Indicative](/materials/une/c16k "UNE C16k") - [F.1511 Indicative](/materials/une/f-1511 "UNE F.1511") - [F.1511 -C 16 k Indicative](/materials/une/f-1511-c-16-k "UNE F.1511 -C 16 k") ISO International · 2 - [C15E4 Indicative](/materials/iso/c15e4 "ISO C15E4") - [C15M2 Indicative](/materials/iso/c15m2 "ISO C15M2") JIS Japan · 3 - [S15C Indicative](/materials/jis/s15c "JIS S15C") - [S15CK Indicative](/materials/jis/s15ck "JIS S15CK") - [S17C Indicative](/materials/jis/s17c "JIS S17C") GB China · 1 - [15 Indicative](/materials/gb/15 "GB 15") GOST Russia / CIS · 2 - [15 Indicative](/materials/gb/15 "GOST 15") - [ct15 Indicative](/materials/gost/ct15 "GOST ct15") UNI Italy · 2 - [C15 Indicative](/materials/is/c15 "UNI C15") - [C16 Indicative](/materials/din-en/c16 "UNI C16") SS Sweden · 1 - [1370 Indicative](/materials/ss/1370 "SS 1370") ČSN Czechia · 3 - [12 020 VAR Indicative](/materials/csn/12-020-var "ČSN 12 020 VAR") - [12020 Indicative](/materials/csn/12020 "ČSN 12020") - [12023 Indicative](/materials/csn/12023 "ČSN 12023") STN Slovakia · 1 - [12 023 Indicative](/materials/csn/12023 "STN 12 023") PN Poland · 1 - [15 Indicative](/materials/gb/15 "PN 15") HRN Croatia · 1 - [Č1221 Indicative](/materials/hrn/c1221 "HRN Č1221") MSZ Hungary · 1 - [C 15 Indicative](/materials/is/c15 "MSZ C 15") AS / NZS Australia / New Zealand · 4 - [1015 Indicative](/materials/aisi-sae/1015 "AS / NZS 1015") - [K1015 Indicative](/materials/as-nzs/k1015 "AS / NZS K1015") - [K1018 Indicative](/materials/as-nzs/k1018 "AS / NZS K1018") - [K1020 Indicative](/materials/as-nzs/k1020 "AS / NZS K1020") STAS Romania · 1 - [OLC15 Indicative](/materials/stas/olc15 "STAS OLC15") ÖNORM Austria · 1 - [RC15 Indicative](/materials/onorm/rc15 "ÖNORM RC15") SFS Finland · 1 - [505 Indicative](/materials/sfs/505 "SFS 505") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 5 elements on file · weight % What this alloy is Fe Mn Si C Iron — the balance, never listed by a standard — 98.9 % Mn — 0.4 % Si — 0.4 % C — 0.2 % Traces & impurities · 0.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.12–0.18 | | Si | ≤ 0.4 | | Mn | 0.3–0.6 | | P | 0.035 | | S | 0.035 | Carbon Silicon Manganese Phosphorus Sulfur 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 | 0,12-0,18 | 0.120 | 0.180 | Range | | Si | ≤0,40 | — | 0.400 | Max | | P | 0,035 | 0.035 | 0.035 | Exact | | S | 0,035 | 0.035 | 0.035 | Exact | | Mn | 0,30-0,60 | 0.300 | 0.600 | Range | 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 Density 7,85 g/cm³ Exact 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 3 conditions · 5 values By delivery state**Soft annealed** source `steelnumber` | Delivery state | HB | HRB | HV | |---|---|---|---| | Soft annealed | 143 | 76 | 140 | By delivery state**Normalized** source `steelnumber` | Delivery state | HB | |---|---| | Normalized | 95 – 150 | By delivery state**Cold rolled** source `steelnumber` | Delivery state | HV | |---|---| | Cold rolled | 260 | 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. [C10E 1.1121 Mn 0,30-0,60 · Si ≤0,40 - ΔMn 0.00 - ΔSi 0.00 - 61 designations](/materials/din-en/c10e "C10E")[C15R 1.1140 Mn 0,30-0,60 · Si ≤0,40 - ΔMn 0.00 - ΔSi 0.00 - 10 designations](/materials/din-en/c15r "C15R")[C10R 1.1207 Mn 0,30-0,60 · Si ≤0,40 - ΔMn 0.00 - ΔSi 0.00 - 7 designations](/materials/din-en/c10r "C10R")[C10D2 1.1114 Mn 0,30-0,50 · Si ≤0,30 - ΔMn 0.05 - ΔSi 0.05 - 3 designations](/materials/din-en/c10d2 "C10D2")[C16E 1.1148 Mn 0,60-0,90 · Si ≤0,40 - ΔMn 0.30 - ΔSi 0.00 - 9 designations](/materials/din-en/c16e "C16E")[C16R 1.1208 Mn 0,60-0,90 · Si ≤0,40 - ΔMn 0.30 - ΔSi 0.00 - 3 designations](/materials/din-en/c16r "C16R") ## 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=55fd3ea8-2771-476a-bb22-dee15dc69508&designation=901e2ba5-dca1-4abc-9a54-9a1abc22dbe8 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/aisi-sae/gr-1015.pdf "Datasheet as PDF")