Steel C17C Carburized
Heat-treated state
EN 1.0434
Final service condition for pins, bushings and light gears needing a wear-resistant case over a tough, low-carbon core.
Values for the Carburized condition
Other C17C tempers and conditions
C17C is listed in 6 conditions; see the grade overview at C17C.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Spheroidize annealed | Softest condition, chosen for severe cold heading, deep upsetting and cold extrusion of fasteners before case hardening. | 240 | 400 | 32 | 115 HB | — |
Normalized | Use when a uniform fine ferrite-pearlite structure and consistent core properties are needed before carburizing or welding. | 260 | 420 | 28 | 120 HB | — |
Hot rolled | Cheapest as-rolled wire rod or bar for parts that will be re-annealed, hot formed or carburized after machining. | 270 | 430 | 27 | 126 HB | — |
Spheroidize annealed then cold drawn | Preferred cold-heading wire: soft spheroidized core with a lightly drawn, size-controlled bright surface for multi-station headers. | 380 | 480 | 16 | 140 HB | — |
+CDefault Cold drawn | Standard stocked bar/wire: tight tolerance, bright surface and raised strength for machined pins, shafts and studs. | 450 | 550 | 12 | 160 HB | — |
CarburizedThis page Carburized, quenched and low-temperature tempered (case hardened) | Final service condition for pins, bushings and light gears needing a wear-resistant case over a tough, low-carbon core. | 480 | 700 | 15 | 60 HRC | — |
What is C17C Carburized?
C17C Carburized is C17C heat treated to Carburized — final service condition for pins, bushings and light gears needing a wear-resistant case over a tough, low-carbon core. C17C Carburized has a yield strength of 480 MPa (69.6 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 59% of steel grades. Elongation at break is 15% and the elastic modulus is 205 GPa (29.7 Msi). C17C Carburized has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,495°C (2,723 °F). +C is the default condition FabDigit quotes; Carburized is available on request or by drawing note.
Advantages
- High electrical conductivity — 11 % IACS, better than 98% of steel grades
- Conducts heat well — 51 W/m·K (29.5 BTU/hr·ft·°F), better than 92% of steel grades
Limitations
- Limited service temperature — 180°C (356 °F), worse than 98% of steel grades
- Difficult to machine — 15/100, worse than 98% of steel grades
- Limited formability — 10/100, worse than 95% of steel grades
- Difficult to weld — 25/100, worse than 77% of steel grades
C17C Carburized properties
Typical room-temperature values for C17C Carburized; 12 are specific to this condition. Other listed values are C17C reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
C17C Carburized has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,495°C (2,723 °F).
Mechanical15
C17C Carburized has a yield strength of 480 MPa (69.6 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 59% of steel grades. Elongation at break is 15% and the elastic modulus is 205 GPa (29.7 Msi).
Thermal6
C17C Carburized is rated for continuous service to 180°C (356 °F). It conducts heat at 51 W/m·K (29.5 BTU/hr·ft·°F), better than 92% of steel grades. Thermal expansion is 11.9 µm/m·K (6.61 µin/in·°F).
Electrical3
C17C Carburized conducts electricity at 11 % IACS, better than 98% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (10/100), worse than 86% of steel grades.
Sustainability4
Producing a kilogram of C17C Carburized takes about 25 MJ of energy and emits 2 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 30%.
Manufacturability6
C17C Carburized's machinability is poor (15/100, worse than 98% of steel grades); weldability poor (25/100); formability not recommended (10/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C17C Carburized
Is C17C easy to machine?
Gummy and prone to built-up edge when annealed — use cold-drawn stock, positive rake, high speed and generous coolant; expect ~70 % of 1212 in the +C condition.
Can C17C be welded?
Excellent weldability by MIG/TIG/MMA/resistance with no preheat below ~25 mm; use ER70S-6 class filler and re-carburize or re-heat-treat afterwards if a case is required.
Can C17C be formed, bent or molded?
Designed for severe cold heading, upsetting and extrusion in the +AC or +AC+C condition; hot forming 850–1150 °C, normalize afterwards for uniform core properties.
What surface finishes work on C17C?
No corrosion resistance of its own — zinc plate, zinc-nickel, phosphate-and-oil, or paint; takes a fine but easily rusting polish, and carburized surfaces should be ground after heat treatment.
C17C 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 |
|---|---|---|
| CEN 10263-3 C17C; AISI 1017 0.15–0.20; GB 15 steel 0.12–0.19 | 0.14 – 0.2 | 0.17 |
| Sioften ≤0.10 for cold-heading (Al-killed) wire | ≤ 0.3 | 0.2 |
| MnAISI 1017 0.30–0.60; EN cold-heading grade toward upper range | 0.5 – 0.9 | 0.7 |
| P≤0.040 in AISI 1017 | ≤ 0.03 | 0.02 |
| S≤0.050 in AISI 1017 | ≤ 0.03 | 0.02 |
| Alaluminium-killed, fine grain | 0.02 – 0.06 | 0.04 |
| Curesidual | ≤ 0.25 | 0.1 |
| Fe | balance | — |
C17C Carburized — frequently asked
What is C17C Carburized used for?
C17C Carburized is typically used for small gears, pins, bushings and light-duty shafts. In short: highest weldability carbon steel; severe cold-heading grade; soft tough carburizing core.
What is the yield strength of C17C Carburized?
C17C Carburized has a typical yield strength of 480 MPa (69.6 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 59% of steel grades. Strength varies by condition: see the 6 listed tempers.
Is C17C Carburized easy to machine?
Not especially — machinability is rated poor (15/100, worse than 98% of steel grades). Gummy and prone to built-up edge when annealed — use cold-drawn stock, positive rake, high speed and generous coolant; expect ~70 % of 1212 in the +C condition.
Can C17C Carburized be welded?
Not readily — weldability is rated poor (25/100). Excellent weldability by MIG/TIG/MMA/resistance with no preheat below ~25 mm; use ER70S-6 class filler and re-carburize or re-heat-treat afterwards if a case is required.
What surface finishes work on C17C Carburized?
No corrosion resistance of its own — zinc plate, zinc-nickel, phosphate-and-oil, or paint; takes a fine but easily rusting polish, and carburized surfaces should be ground after heat treatment.
Can C17C Carburized be formed, bent or molded?
Designed for severe cold heading, upsetting and extrusion in the +AC or +AC+C condition; hot forming 850–1150 °C, normalize afterwards for uniform core properties.
What is the maximum service temperature of C17C Carburized?
C17C Carburized is rated for continuous use to about 180°C (356 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- EN 10263-3 Steel rod, bars and wire for cold heading and cold extrusion — Case hardening steels — CEN (2017)
- EN 10084 Case hardening steels — Technical delivery conditions — CEN (2008)
- GB/T 699 (15 steel) — SAC (2015)
- SAE J403 / ASTM A29 carbon steel grade 1017 — SAE / ASTM (2020)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol.16 — Machining — ASM International (1989)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.