--- title: "2C15 — Case hardening steels" description: "2C15 in UNI: material number 1.1121, also listed as C10E. It is a material in the category Case hardening steels. 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Compare it to detect a real > content change; `generated` moves on every render and is not a change signal. UNI · Italy · 61 designations # 2C15 2C15 is a designation in UNI for the material held under material number 1.1121, also listed as C10E. It is a material in the category Case hardening steels. We list 61 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, BS, AFNOR, UNE, ISO, JIS, GB, GOST, UNI, SS, ČSN, PN, STN, MSZ, AS / NZS, STAS, BDS, ÖNORM, NBN, SNV and KS. - [*Material no.* **1.1121**](/materials/material-no/1.1121 "Material no.: 1.1121") - [*Category* **Case hardening steels · 60 grades**](/categories/case-hardening-steels "Category: Case hardening steels · 60 grades") - *Designations* **61** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=554038e9-9b25-4814-99cb-1c16d1a40a7b&designation=050bdc8a-2857-438f-8c76-5f4d7530a47f "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/uni/2c15.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN C10E This grade’s own name](/materials/din-en/c10e "DIN / EN C10E") - [UNS G10100 This grade’s own name · 8 grades on that route](/materials/uns/g10100 "UNS G10100") - [AISI / SAE 1010 This grade’s own name · 10 grades on that route](/materials/aisi-sae/1010 "AISI / SAE 1010") ## 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 61 designations · 23 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 Withdrawn designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.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 - [C10E This grade’s own name](/materials/din-en/c10e "DIN / EN C10E") - [Ck 10 This grade’s own name Withdrawn](/materials/snv/ck10 "DIN / EN Ck 10") - [Ck15 Indicative](/materials/snv/ck15 "DIN / EN Ck15") UNS United States · 1 - [G10100 This grade’s own name](/materials/uns/g10100 "UNS G10100") AISI / SAE United States · 6 - [1008 Indicative](/materials/aisi-sae/1008 "AISI / SAE 1008") - [1010 This grade’s own name](/materials/aisi-sae/1010 "AISI / SAE 1010") - [1011 Indicative](/materials/aisi-sae/1011 "AISI / SAE 1011") - [G10080 Indicative](/materials/uns/g10080 "AISI / SAE G10080") - [G10100 Indicative](/materials/uns/g10100 "AISI / SAE G10100") - [M1010 Indicative](/materials/aisi-sae/m1010 "AISI / SAE M1010") BS United Kingdom · 6 - [040A10 Indicative](/materials/bs/040a10 "BS 040A10") - [045A10 Indicative](/materials/bs/045a10 "BS 045A10") - [045M10 Indicative](/materials/bs/045m10 "BS 045M10") - [C10 C10E C10R Indicative](/materials/bs/c10-c10e-c10r "BS C10 C10E C10R") - [C10E Indicative](/materials/din-en/c10e "BS C10E") - [CS12 Indicative](/materials/bs/cs12 "BS CS12") AFNOR France · 4 - [AF-34 Indicative](/materials/afnor/af34 "AFNOR AF-34") - [C10RR Indicative](/materials/afnor/c10rr "AFNOR C10RR") - [XC10 Indicative](/materials/afnor/xc10 "AFNOR XC10") - [XC12 Indicative](/materials/afnor/xc12 "AFNOR XC12") UNE Spain · 5 - [C10E Indicative](/materials/din-en/c10e "UNE C10E") - [C10k Indicative](/materials/une/c10k "UNE C10k") - [F.151 Indicative](/materials/une/f-151 "UNE F.151") - [F.1510 Indicative](/materials/une/f-1510 "UNE F.1510") - [F.1510-C 10 k Indicative](/materials/une/f-1510-c-10-k "UNE F.1510-C 10 k") ISO International · 3 - [C10 Indicative](/materials/din-en/c10 "ISO C10") - [C15M2 Indicative](/materials/iso/c15m2 "ISO C15M2") - [S10C Indicative](/materials/jis/s10c "ISO S10C") JIS Japan · 6 - [S09CK Indicative](/materials/jis/s09ck "JIS S09CK") - [S09CX Indicative](/materials/jis/s09cx "JIS S09CX") - [S10C Indicative](/materials/jis/s10c "JIS S10C") - [S9CK Indicative](/materials/jis/s9ck "JIS S9CK") - [SPHE Indicative](/materials/ks/sphe "JIS SPHE") - [SWR1 Indicative](/materials/jis/swr1 "JIS SWR1") GB China · 3 - [08 Indicative](/materials/bds/08 "GB 08") - [08F Indicative](/materials/gb/08f "GB 08F") - [10 Indicative](/materials/gb/10 "GB 10") GOST Russia / CIS · 2 - [08 Indicative](/materials/bds/08 "GOST 08") - [10 Indicative](/materials/gb/10 "GOST 10") UNI Italy · 4 - [2C10 Indicative](/materials/uni/2c10 "UNI 2C10") - **2C15 Indicative** - [C10 Indicative](/materials/din-en/c10 "UNI C10") - [C15 Indicative](/materials/is/c15 "UNI C15") SS Sweden · 2 - [1146 Indicative](/materials/aisi-sae/1146 "SS 1146") - [1265 Indicative](/materials/ss/1265 "SS 1265") ČSN Czechia · 1 - [12010 Indicative](/materials/csn/12010 "ČSN 12010") PN Poland · 2 - [08X Indicative](/materials/pn/08x "PN 08X") - [10 Indicative](/materials/gb/10 "PN 10") STN Slovakia · 1 - [12 010 Indicative](/materials/csn/12010 "STN 12 010") MSZ Hungary · 1 - [C10 Indicative](/materials/din-en/c10 "MSZ C10") AS / NZS Australia / New Zealand · 4 - [1010 Indicative](/materials/aisi-sae/1010 "AS / NZS 1010") - [A1010 Indicative](/materials/as-nzs/a1010 "AS / NZS A1010") - [CA1010 Indicative](/materials/as-nzs/ca1010 "AS / NZS CA1010") - [HA1010 Indicative](/materials/as-nzs/ha1010 "AS / NZS HA1010") STAS Romania · 1 - [OLC10X Indicative](/materials/stas/olc10x "STAS OLC10X") BDS Bulgaria · 1 - [08 Indicative](/materials/bds/08 "BDS 08") ÖNORM Austria · 1 - [RC12 Indicative](/materials/onorm/rc12 "ÖNORM RC12") NBN Belgium · 1 - [C10-2 Indicative](/materials/une/c102 "NBN C10-2") SNV Switzerland · 1 - [Ck10 Indicative](/materials/snv/ck10 "SNV Ck10") KS South Korea · 2 - [SM10C Indicative](/materials/ks/sm10c "KS SM10C") - [SM9CK Indicative](/materials/ks/sm9ck "KS SM9CK") 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 Si Cr Iron — the balance, never listed by a standard — 98.6 % Mn — 0.4 % Si — 0.4 % Cr — 0.4 % Traces & impurities · 0.2 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.07–0.13 | | Si | ≤ 0.4 | | Mn | 0.3–0.6 | | P | 0.035 | | S | 0.035 | | Cr | ≤ 0.4 | Carbon Silicon Manganese Phosphorus Sulfur 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 | 0,07-0,13 | 0.070 | 0.130 | Range | | Si | ≤0,40 | — | 0.400 | Max | | P | 0,035 | 0.035 | 0.035 | Exact | | S | 0,035 | 0.035 | 0.035 | Exact | | Cr | (≤0,40) | — | 0.400 | Max | | 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, 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 · 4 values By delivery state**Soft annealed** source `steelnumber` | Delivery state | HB | HRB | |---|---|---| | Soft annealed | 131 | 73 | By delivery state**Normalized** source `steelnumber` | Delivery state | HB | |---|---| | Normalized | 85 – 140 | By delivery state**Cold rolled** source `steelnumber` | Delivery state | HV | |---|---| | Cold rolled | 250 | 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. [C15R 1.1140 Mn 0,30-0,60 · Si ≤0,40 - ΔMn 0.00 - ΔSi 0.00 - 10 designations](/materials/din-en/c15r "C15R")[1.1141 1.1141 Mn 0,30-0,60 · Si ≤0,40 - ΔMn 0.00 - ΔSi 0.00 - 52 designations](/materials/material-no/1.1141 "1.1141")[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=554038e9-9b25-4814-99cb-1c16d1a40a7b&designation=050bdc8a-2857-438f-8c76-5f4d7530a47f "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/uni/2c15.pdf "Datasheet as PDF")