Non-Water-Hardenable Steels
C35E – 1.1181 / 1035 / Ck35 / S35C / XC38 / 080M36 / CFS6 / C35 / C35k / 1572 / C35 / C35E4
C35E – 1.1181 steel grade belongs to the group of medium-carbon structural steels and is an important engineering material offering a balanced combination of strength and machinability. Although it is known under different designations in various countries, its fundamental properties remain largely consistent. For example, it is referred to as C35E – 1.1181 in Europe, AISI 1035 in the United States, Ck35 in Germany, S35C in Japan, XC38 in France, and 080M36 in the United Kingdom. These alternative names reflect the steel’s widespread use in international engineering and manufacturing applications.
C35E steel typically contains approximately 0.32% – 0.40% carbon. This carbon content provides higher strength and hardness compared to low-carbon steels, while maintaining adequate ductility and good machinability. As a result, it is suitable for applications requiring both mechanical strength and formability. It performs reliably in machining operations such as turning, milling, and drilling.
One of the key advantages of C35E steel is its excellent response to heat treatment processes. Through normalizing, hardening, and tempering, its mechanical properties can be significantly improved. These treatments enhance the material’s strength, hardness, and wear resistance. In addition, surface hardening processes can be applied to increase the durability of the outer layer while maintaining a ductile core structure.
C35E steel provides reliable performance in components subjected to medium loads and requiring durability. For this reason, it is widely used in machine manufacturing, the automotive industry, and general engineering applications. Its cost-effectiveness and ease of availability also make it an attractive material choice.
Thanks to its combination of durability, machinability, and heat-treatment capability, C35E – 1.1181 steel has a wide range of industrial applications. Its ability to deliver both production efficiency and balanced performance makes it an ideal material for many engineering uses.
Main Application Areas
- Production of shafts, axles, and spindles
- Gears and transmission components
- Mechanical parts used in machinery manufacturing
- Various structural components in the automotive industry
- Bolts, pins, and fastening elements
- Components designed for heat treatment hardening
- Medium load-bearing structural elements
- Pressed and formed metal components
- Durable components used in agricultural machinery
Thanks to these characteristics, C35E – 1.1181 and equivalent steel grades are widely preferred engineering materials that successfully provide a balance between strength and machinability.
General Identity
C35E – 1.1181
| Grade | C35E |
| Number | 1.1181 |
| Classification | Non-alloy quality special steel |
Equivalent Grades
C35E – 1.1181
| USA | 1035 |
| Germany, DIN | Ck35 |
| Japan, Jis | S35C |
| France, AFNOR | XC38 XC38H1 |
| England, BS | 080M36 CFS6 |
| Italy, UNI | C35 |
| Spain, UNE | C35k F1130 |
| Sweden, SS | 1572 |
| Finland, SFS | C35 |
| Russia, Gost | 35 |
| Inter, ISO | C35E4 |
Standards
C35E – 1.1181
| Standard 1 | EN 10277-5: 2008 |
| Standard 2 | EN 10083-2: 2006 |
| Standard 3 | EN 10132-3: 2000 |
| Standard 4 | EN 10305-1: 2010 |
| Standard 5 | EN 10269: 1999 |
| Standard 6 | EN 10250-2: 2000 |
| Standard 7 | EN 10297-1: 2003 |
Chemical Composition
C35E – 1.1181
| C | 0.32 – 0.39 |
| Si | max 0.40 |
| Mn | 0.50 – 0.80 |
| Ni | max 0.40 |
| P | max 0.030 |
| S | max 0.035 |
| Cr | max 0.40 |
| Mo | max 0.10 |
Mechanical Properties
C35E – 1.1181
| Nominal thickness (mm) | to 16 | 16 – 100 | 100 – 250 | 250 – 500 | 500 – 1000 |
| Rm – Tensile strength (MPa) (+N) | 550 | 520 | 500 | 480 | 470 |
| Nominal thickness (mm) | 0.3 – 3 |
| Rm – Tensile strength (MPa) (+A) | 540 |
| Nominal thickness (mm) | 0.3 – 3 |
| Rm – Tensile strength (MPa) (+CR) | 930 |
| Nominal thickness (mm) | 5 – 10 | 10 – 16 | 16 – 40 | 40 – 63 | 63 – 100 |
| Rm – Tensile strength (MPa) (+C) | 650 – 1000 | 600 – 950 | 580 – 880 | 550 – 840 | 520 – 800 |
| Nominal thickness (mm) | to 8 | 8 – 20 | 20 – 50 | 50 – 80 |
| Rm – Tensile strength (MPa) (+QT) | 630 | 600 | 550 | 500 |
C35E – 1.1181
| Nominal thickness (mm) | to 8 | 8 – 20 | 20 – 50 | 50 – 80 |
| ReH – Minimum yield strength (MPa) (+QT) | 430 | 380 | 320 | 290 |
C35E – 1.1181
| Nominal thickness (mm) | to 16 | 16 – 100 | 100 – 250 |
Re – Upper yield strength or
Rp0.2 – 0.2% proof strength (MPa) (+N) | 300 | 270 | 245 |
| Nominal thickness (mm) | 0.3 – 3 |
| Rp0.2 0.2% proof strength (MPa) (+A) | 430 |
| Nominal thickness (mm) | to 100 | 100 – 250 | 250 – 500 | 500 – 1000 |
| Re Upper yield strenght (MPa) (+N) | 270 | 245 | 220 | 210 |
| Nominal thickness (mm) | 5 – 10 | 10 – 16 | 16 – 40 | 40 – 63 | 63 – 100 |
| Rp0.2 0.2% proof strength (MPa) (+C) | 510 | 420 | 320 | 300 | 270 |
C35E – 1.1181
| KV Impact energy (J) (+QT) | +20° – 35 |
| KV Impact energy (J) (+N) | +20° – 27 |
| KV Impact energy (J) transverse (+QT) | +20° – 22 |
C35E – 1.1181
| A – Min. elongation at fracture (%) transverse (+N) | 15 |
| Nominal thickness (mm): | 5 – 10 | 10 – 16 | 16 – 40 | 40 – 63 | 63 – 100 |
| A – Min. elongation at fracture (%) (+C) | 6 | 7 | 8 | 9 | 9 |
| Nominal thickness (mm) | to 8 | 8 – 20 | 20 – 50 | 50 – 80 |
| A – Min. elongation at fracture (%) (+QT) | 17 | 19 | 20 | 20 |
| A – Min. elongation at fracture (%) (+N) | 21 |
| A – Min. elongation at fracture (%) (+A) | 22 |
C35E – 1.1181
| Nominal thickness (mm) | to 16 | 16 – 100 | 100 – 250 |
| A – Min. elongation at fracture (%) (+A) | 18 | 19 | 19 |
C35E – 1.1181
| Birinel hardness (HBW) (+SH): | 154 – 207 |
| Birinel hardness (HBW) (+A): | 183 |
| Vickers hardness (HV) (+CR) | 275 |
| Vickers hardness (HV) (+A) | 170 |
