Steel C17E2C
EN C17E2C
C17E2C is a low-carbon (~0.17 % C) non-alloy steel (1.1147, Ck17, close to AISI 1016) supplied in the 2C cold-forming quality and intended for carburizing, giving a tough core under a hard wear-resistant case.
Reference datasheet — C17E2C is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the +AC+C condition
C17E2C tempers and conditions
C17E2C is supplied in 7 conditions, soft to hard. +AC+C is the default FabDigit quotes; the values on this page are for it.
Compare all 7 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Spheroidize annealed | Softest condition — choose when maximum cold-forming/deep-upsetting capability is needed before drawing. | 250 | 400 | 30 | 115 HB | — |
Annealed | General soft delivery condition for machining or moderate forming when full spheroidizing is not required. | 255 | 410 | 28 | 120 HB | 10.8 % IACS |
Hot rolled | Cheapest starting stock for hot forging, re-drawing or parts that will be normalized/carburized later. | 265 | 430 | 26 | 125 HB | — |
Normalized | Use to refine grain and homogenize forgings before carburizing, giving uniform core properties. | 285 | 440 | 27 | 131 HB | 10.5 % IACS |
+AC+CDefault Spheroidize annealed and cold drawn | Standard cold-heading / cold-extrusion wire and bar: bright surface, tight tolerance, still enough ductility for multi-station upsetting. | 380 | 480 | 15 | 143 HB | — |
Carburized and hardened | Final service condition for pins, bushings, small gears and fasteners needing a 58–62 HRC wear surface with a tough ~150–200 HB core. | 420 | 640 | 12 | 60 HRC | — |
Untreated then cold drawn | Pick for bright, dimensionally accurate bar/wire with higher strength when only light upsetting or straight machining follows. | 460 | 540 | 11 | 163 HB | — |
What is C17E2C?
C17E2C is a low-carbon (~0.17 % C) non-alloy steel (1.1147, Ck17, close to AISI 1016) supplied in the 2C cold-forming quality and intended for carburizing, giving a tough core under a hard wear-resistant case. It is chosen for cold-headed, upset and cold-extruded parts that are case hardened afterwards, and is stocked as untreated, spheroidize-annealed (+AC), cold-drawn (+AC+C), annealed and normalized bar and wire. Default values are 380 MPa yield, 480 MPa tensile, 15 % elongation and 143 HB, with a weldability score of 95 at CEV ≈ 0.26. It has no corrosion resistance bare and must not be welded after carburizing; C20E2C is the next carbon step on the same cold-forming route. C17E2C has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,470°C (2,678 °F). C17E2C has a yield strength of 380 MPa (55.1 ksi) and a tensile strength of 480 MPa (69.6 ksi) — weaker than 68% of steel grades. Elongation at break is 15% and the elastic modulus is 207 GPa (30 Msi).
What is C17E2C used for?
- small gears
- pins
- case-hardened shafts
- chain components
Advantages
- Forms and bends easily — 90/100, better than 98% of steel grades
- Readily welded — 95/100, better than 97% of steel grades
- Low embodied carbon — 1.9 kg CO₂/kg, better than 92% of steel grades
- High electrical conductivity — 10.5 % IACS, better than 89% of steel grades
- Conducts heat well — 50 W/m·K (28.9 BTU/hr·ft·°F), better than 87% of steel grades
Limitations
- Hard to polish — 45/100, worse than 84% of steel grades
C17E2C properties
Typical room-temperature values for C17E2C-+AC+C; bars are the position among steel grades.
Physical3
C17E2C has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,470°C (2,678 °F).
Mechanical16
C17E2C has a yield strength of 380 MPa (55.1 ksi) and a tensile strength of 480 MPa (69.6 ksi) — weaker than 68% of steel grades. Elongation at break is 15% and the elastic modulus is 207 GPa (30 Msi).
Thermal6
C17E2C is rated for continuous service to 400°C (752 °F). It conducts heat at 50 W/m·K (28.9 BTU/hr·ft·°F), better than 87% of steel grades. Thermal expansion is 11.8 µm/m·K (6.56 µin/in·°F).
Electrical3
C17E2C conducts electricity at 10.5 % IACS, better than 89% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (10/100), worse than 86% of steel grades.
Sustainability4
Producing a kilogram of C17E2C takes about 25 MJ of energy and emits 1.9 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 30%.
Manufacturability7
C17E2C's machinability is good (58/100, better than 75% of steel grades); weldability excellent (95/100); formability excellent (90/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the steel family
Yield strength against density for every steel grade FabDigit runs. C17E2C is highlighted; hover a dot for its name, or open the interactive family chart.
Working with C17E2C
Is C17E2C easy to machine?
Soft and gummy — use sharp positive-rake tooling, high speed and generous coolant; cold-drawn condition machines best (~70% of 1212), chip breaking is the main issue.
Can C17E2C be welded?
Excellent weldability by MIG/TIG/spot/projection with ER70S-type filler; CEV ≈ 0.26 so no preheat for normal sections, but carburized parts should not be welded.
Can C17E2C be formed, bent or molded?
Designed for severe cold heading, upsetting and cold extrusion in +AC or +AC+C with phosphate + soap or polymer lubricant; hot forge 1100–1250 °C.
C17E2C chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| C | 0.14 – 0.2 | 0.17 |
| Simax per EN 10263-3 | ≤ 0.3 | 0.15 |
| Mn | 0.3 – 0.6 | 0.45 |
| P | ≤ 0.03 | 0.02 |
| S | ≤ 0.03 | 0.02 |
| Curesidual max | ≤ 0.25 | 0.1 |
| Fe | balance |
What surface finishes work on C17E2C?
No corrosion resistance bare — specify zinc or zinc-nickel electroplating (with bake for hydrogen embrittlement relief), phosphate, black oxide, Dacromet or paint; surface can be case hardened for wear.
Surface treatments FabDigit runs on steel parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Organic Coating
Black / Phosphate
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Steel C17E2C in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
How much does C17E2C cost?
C17E2C is a budget-cost steel ($), cheaper than about 90% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
C17E2C — frequently asked
What is C17E2C used for?
C17E2C is typically used for small gears, pins, case-hardened shafts and chain components. In short: built for severe cold heading; carburizing quality, tough core; very high weldability score.
What is the yield strength of C17E2C?
C17E2C has a typical yield strength of 380 MPa (55.1 ksi) and a tensile strength of 480 MPa (69.6 ksi) — weaker than 68% of steel grades. Strength varies by condition: see the 7 listed tempers.
Is C17E2C easy to machine?
Reasonably — machinability is rated good (58/100, better than 75% of steel grades). Soft and gummy — use sharp positive-rake tooling, high speed and generous coolant; cold-drawn condition machines best (~70% of 1212), chip breaking is the main issue.
Can C17E2C be welded?
Yes — weldability is rated excellent (95/100). Excellent weldability by MIG/TIG/spot/projection with ER70S-type filler; CEV ≈ 0.26 so no preheat for normal sections, but carburized parts should not be welded.
What surface finishes work on C17E2C?
No corrosion resistance bare — specify zinc or zinc-nickel electroplating (with bake for hydrogen embrittlement relief), phosphate, black oxide, Dacromet or paint; surface can be case hardened for wear.
Can C17E2C be formed, bent or molded?
Designed for severe cold heading, upsetting and cold extrusion in +AC or +AC+C with phosphate + soap or polymer lubricant; hot forge 1100–1250 °C.
What is the maximum service temperature of C17E2C?
C17E2C is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C17E2C +AC+C and C17E2C-CH?
+AC+C is the default condition — standard cold-heading / cold-extrusion wire and bar: bright surface, tight tolerance, still enough ductility for multi-station upsetting. CH: final service condition for pins, bushings, small gears and fasteners needing a 58–62 HRC wear surface with a tough ~150–200 HB core. Yield strength is 380 MPa in +AC+C versus 420 MPa in CH.
How much does C17E2C cost?
C17E2C is a budget-cost steel ($), cheaper than about 90% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- EN 10263-3 — Steel rod, bars and wire for cold heading and cold extrusion, Part 3: case hardening steels — CEN (2017)
- EN 10084 — Case hardening steels, technical delivery conditions — CEN (2008)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Stahlschlüssel / Key to Steel — material 1.1147 (C17E2C) — Verlag Stahlschlüssel Wegst (2023)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.