Corona SteelIndustry Pvt Ltd
FR

Choisir la langue

Recherche de produitsDemander un devis
FR

Choisir la langue

Menu
Plan du site07 entrées
Corona SteelFondée en 1955
Resources/Materials & grades/1015 / C15E

Materials & grades

1015 / C15E / S15C low-carbon steel: equivalents 080M15, 15C4 and Ck15

1015 is a low-carbon steel with about 0.15 % carbon, used for case-hardened pins and shafts, cold-formed parts and welded work. Its close equivalents are C15E (1.1141) in Europe, S15C in Japan and, with wider limits, 080M15 in the UK and 15C4 in India.

Names by standard

What it is called in each region

RegionSystemDesignationNormeMatch
USAAISI/SAE1015SAE J403; ASTM A29 / A108Same material
UNSG10150—Same material
UKBS 970080M15Saarstahl lists it against C15R and SAE 1015. Manganese is higher than 1015's. BS 970 has been withdrawn.BS 970-1:1991Closest equivalent
BS 970 (1955 EN series)EN32 (EN32B)Superseded name for 080M15. Sources vary between EN32 and EN32B.—Closest equivalent
BS 970040A15Composition-only grade that Saarstahl also lists against C15R.BS 970-1:1991Closest equivalent
BS 970080A15Carbon 0.13–0.18 %, manganese 0.70–0.90 %.BS 970-1Closest equivalent
EUEN 10027-1 nameC15ECase-hardening steel. Carbon 0.12–0.18 %, manganese 0.30–0.60 %.EN 10084 (EN ISO 683-3)Equivalent
EN 10027-2 number1.1141Material number of C15E.EN 10084Equivalent
EN 10027-1 nameC15R (1.1140)Sulphur-range variant of C15E. Saarstahl lists SAE 1015 against it.EN 10084Equivalent
DIN (legacy)Ck15 / Cm15Superseded German names for C15E and C15R.—Equivalent
IndeIS 157015C4Carbon ≤0.20 %, manganese 0.30–0.60 %. Old Indian name C15.IS 1570 (Part 2/Sec 1)Closest equivalent
IS 157014C6Carbon 0.10–0.18 %, manganese 0.40–0.70 %. Old Indian name C14.IS 1570 (Part 2/Sec 1)Closest equivalent
JapanJIS G 4051S15CCarbon 0.13–0.18 %, the same range as 1015. Total Materia lists SAE 1015 and C15E (1.1141) as official equivalents.JIS G 4051Equivalent

On equivalence

  • 1015 and C15E are close equivalents: carbon is 0.13–0.18 % against 0.12–0.18 % and manganese is 0.30–0.60 % in both. S15C has the same carbon range as 1015.
  • The UK names carry more manganese. BS 970 080A15 has 0.70–0.90 % manganese and 080M15 is a higher-manganese grade, so neither is an exact match. Saarstahl lists both 040A15 and 080M15 against C15R.
  • IS 15C8 (0.10–0.20 % carbon, 0.60–0.90 % manganese) is a higher-manganese Indian grade that sits nearer 1018 than 1015, so it is listed on the 1018 page.
  • IS 15C4 has no carbon minimum (≤0.20 %), so it admits steel outside the 1015 range.
  • S15C has the same manganese range as 1015, plus silicon 0.15–0.35 % and a tighter sulphur cap (0.035 % against 0.050 %).
  • The C15E composition shown combines Total Materia's carbon, manganese and phosphorus limits with Kipp's silicon and sulphur limits.

Chemical composition

Composition limits, mass %

Element1015USA · SAE J403080A15UK · BS 970-1C15E (1.1141)EU · EN 1008415C4Inde · IS 1570 (Part 2/Sec 1):197914C6Inde · IS 1570 (Part 2/Sec 1):1979S15CJapan · JIS G 4051:2023
C0.13–0.180.13–0.180.12–0.18≤0.200.10–0.180.13–0.18
Si——≤0.40——0.15–0.35
Mn0.30–0.600.70–0.900.30–0.600.30–0.600.40–0.700.30–0.60
P≤0.030—≤0.035——≤0.030
S≤0.050—≤0.035——≤0.035
Cr—≤0.30———≤0.20
Cr+Ni—————≤0.35

Mechanical properties

Strength and hardness

ConditionTensile strengthYield strengthElongationHardness
Hot rolled (1015)Estimated minimum, SAE J1397 basisSAE J1397 estimated minimum, as published by ICAST340 MPa49 ksi190 MPa28 ksi≥28 %101 HB
Cold drawn (1015)Estimated minimum, SAE J1397 basisSAE J1397 estimated minimum, as published by ICAST390 MPa57 ksi320 MPa46 ksi≥18 %111 HB
Hot rolled or normalized (15C4)Specified range, ruling sections up to 150 mmIS 1570 (Part 2/Sec 1):1979, Table 2370–490 MPa54–71 ksi—≥25 %—
Soft annealed +A (C15R)Specified maximum hardnessSaarstahl material data sheet C15R (1.1140)———≤143 HB

In practice

Behaviour, heat treatment and uses

Characteristics

  • Carbon 0.13–0.18 % and manganese 0.30–0.60 % (SAE J403) give a tough, easily formed steel with moderate strength.
  • Saarstahl describes the C15R variant as an unalloyed case-hardening steel for wear-loaded parts with a core strength of 600–800 MPa, such as piston pins, camshafts and levers.
  • The same Saarstahl sheet states that C15R is suitable for direct hardening.
  • SAE J1397 estimated minimum yield is 190 MPa hot rolled and 320 MPa cold drawn.
  • Low carbon gives good weldability and cold-forming behaviour.

Heat treatment

  • Forging or rolling: about 1150–900 °C (2100–1650 °F) (Saarstahl, C15R).
  • Normalizing: about 890–920 °C (1635–1690 °F), air cool (Saarstahl, C15R).
  • Soft annealing: about 650–700 °C (1200–1290 °F), furnace cool; maximum 143 HB (Saarstahl, C15R).
  • Carburizing: about 880–980 °C (1615–1795 °F) (Saarstahl, C15R).
  • Core hardening: about 880–920 °C (1615–1690 °F) water quench; case hardening about 780–820 °C (1435–1510 °F) water quench (Saarstahl, C15R).
  • Tempering after case hardening: about 150–200 °C (300–390 °F) (Saarstahl, C15R).

Usages types

  • Case-hardened pins, studs and small shafts
  • Camshafts, levers and piston pins
  • Cold-formed and deep-drawn parts
  • Welded fabrications and tube
  • General-purpose bar for light machine parts

Carbon steels

Similar grades compared

GradeC %Mn %Cr %Ni %Tensile, first listed condition
1015 / C15E0.13–0.180.30–0.60≤0.30—340 MPa
1008≤0.100.30–0.50——303 MPa
1010 / C10E0.08–0.130.30–0.60≤0.30—320 MPa
10180.15–0.200.60–0.90≤0.20—400 MPa
1020 / C22E0.18–0.230.30–0.60≤0.30≤0.40380 MPa
1025 / C25E0.22–0.280.30–0.60≤0.30≤0.40400 MPa
1030 / C300.28–0.340.60–0.90≤0.40≤0.40470 MPa
1035 / C350.32–0.380.60–0.90≤0.40≤0.40500 MPa
1040 / C40 / EN80.37–0.440.60–0.90≤0.40≤0.40524 MPa
1045 / C450.43–0.500.60–0.90≤0.40≤0.40565 MPa

Composition from the US standard where one exists, otherwise the first standard listed on each grade's page. Strength conditions differ between grades; open a grade for its full table.

Questions et réponses

Common questions

Is 1015 the same as C15E?

They are close equivalents. C15E (1.1141) has 0.12–0.18 % carbon and 0.30–0.60 % manganese, against 0.13–0.18 % and 0.30–0.60 % for 1015. C15E is a case-hardening steel under EN 10084.

What is the British equivalent of 1015?

The names given most often are 080M15 and 040A15 (BS 970). Neither matches exactly: 080M15 has more manganese. The old EN number for 080M15 is EN32 (also written EN32B).

What is the difference between 1015 and 1018?

1018 has 0.15–0.20 % carbon and 0.60–0.90 % manganese. 1015 has 0.13–0.18 % carbon and 0.30–0.60 % manganese, so it is softer, with an SAE J1397 estimated hot-rolled strength of 340 MPa against 400 MPa.

Is S15C equivalent to 1015?

Yes, as a close equivalent. S15C (JIS G 4051) has 0.13–0.18 % carbon, the same range as 1015, and Total Materia lists SAE 1015 as an official equivalent.

From the Corona catalog

Need a part made to this specification?

Send the drawing, the material or grade, the finish, the quantity and the delivery country. The team reviews the requirement and the manufacturing route.

Démarrer une demande

Keep reading

1010 / C10E1010 is a low-carbon steel with about 0.10 % carbon, supplied as bar, wire and sheet for cold-formed, carburized and welded parts.10181018 is a low-carbon, non-alloy steel with 0.15–0.20 % carbon and 0.60–0.90 % manganese, widely used as cold-drawn bar for machined and case-hardened parts.1020 / C22E1020 is a low-carbon steel with about 0.20 % carbon, used for shafts, pins, brackets and welded or case-hardened parts.NormalizingNormalizing heats steel above its upper critical temperature and lets it cool in still air to give a fine, uniform ferrite–pearlite structure.AnnealingAnnealing heats steel to a set temperature, holds it and cools it slowly to make it softer, more ductile and easier to machine or cold form.SAE / AISI numbersA four-digit SAE/AISI number such as 1045 or 4140 names a carbon or alloy steel by its chemistry: the first two digits identify the steel family and the last two give the nominal carbon content in hundredths of a percent.EN 10027 names and numbersEuropean steels carry two identifiers under EN 10027: a steel name (Part 1) such as S235JR, C45 or 42CrMo4 that describes the steel's use or chemistry, and a material number (Part 2) such as 1.0503 or 1.7225.BS 970 and the EN seriesBS 970 names steels with a six-character code such as 080M40, in which the first three digits give the steel type, the letter says how the steel is specified and the last two digits give the carbon content.IS 1570 and Indian designationsIndian steel names follow the letter-symbol code in IS 1762 (Part 1), which the IS 1570 schedules use: 45C8 means about 0.45% carbon, C for carbon steel and about 0.8% manganese, while alloy names such as 40Cr4Mo3 list each element with a multiplied content figure.JIS steel designationsJapanese JIS steel symbols start with S for steel and add letters for the steel family or its use, but the number means different things in different standards.

References

Sources

  1. ICAST: SAE J403 / SAE J1397 UNS G10150, Hot Rolled — SAE J403 composition and J1397 estimated minimum properties for 1015.
  2. ICAST: SAE J403 / SAE J1397 UNS G10150, Cold Drawn
  3. IS 1570 (Part 2/Sec 1):1979 Schedules for wrought steels: carbon steels (public copy) — Table 1 carbon and manganese limits and Table 2 hot-rolled or normalized tensile limits.
  4. MISUMI: JIS and foreign standards comparison for machine structural steels — Cross-reference of JIS G 4051 grades with ISO, AISI/SAE, BS 970, EN 10084 / 10083 and NF names.
  5. Saarstahl material data sheet: C15R (1.1140) — Heat treatment, +A hardness, use as case-hardening steel; lists BS 040A15 / 080M15 and SAE 1015.
  6. Total Materia: EN C15E (EN 10084:2008) — C, Mn and P limits; DIN Ck15 and C15R cross-references.
  7. Total Materia: JIS S15C (JIS G 4051:2023) — C, Cr and Cr+Ni limits; SAE 1015 and C15E cross-references.
  8. Total Materia: BS 970 080A15 — C, Mn and Cr limits.
  9. KIPP: 1.1141 case-hardened steel — Si and S limits for C15E; Ck15 and AISI 1015 cross-reference.
  10. Kobelco: Wire rods and bars specification tables (JIS G 3505, JIS G 4051) — S15C composition (C, Si, Mn, P, S, Cu, Ni, Cr, Ni+Cr) and the reference table of normalizing temperatures and normalized properties, JIS G 4051 (2009 revision).
  11. SteelJIS: S15C datasheet — S15C composition limits, JIS G 4051 (edition not stated); agrees with Kobelco.
  12. Steel-grades.com: C15E — C15E silicon ≤0.40 %, phosphorus and sulphur ≤0.035 % (Spanish UNE listing of the EN grade).
  13. Summit Steel: carbon steel estimated minimum mechanical properties — Hot-rolled and cold-drawn estimated minimums for 1008 to 1025; agrees with the SAE J1397 tensile values here; a few yield, elongation and hardness figures differ by rounding or typing.

Values summarize published limits and typical data. The governing standard and the current edition control; check them before specifying.