English 
T: +86-0731-85185770
E: enquiry@qilumetal.com
E: enquiry@qilumetal.com
No. 18 Xiangfu Middle Road,Yuhua District, Changsha City
 |
| Quantity: | |
|---|---|
C22 / 1.0402 is a low carbon structural steel belonging to the European standards EN 10083-2 and EN 10250-2. It is widely used in various industries, such as general engineering, construction, and machinery manufacturing, due to its good machinability and weldability. So, you could find its equivalents in different national standards, such as American Standard ASTM 1020 (ASTM A20), Japanese Standard S20C (JIS G4051), Chinese Standard 20# (GB/T 699), and British Standard EN3B/070M20 (BS 970).
C22 is a low carbon steel series with a carbon content of 0.17-0.24%. It is typically supplied in the untreated or normalized condition, where it exhibits good ductility and toughness. Although it has lower strength compared to medium or high carbon steels, it is suitable for applications requiring good formability and weldability, such as shafts, bolts, and lightly stressed components. If higher strength is required, it can be further improved through heat treatment processes like case hardening or surface hardening.
1: Steel equivalent
Country | USA | Europe | China | British | Japan |
Standard | ASTM A29 | EN10083-2 | GB/T699 | BS970 | JIS G4051 |
Grade | 1020 | C22/1.0402 | 20# | 070M20/EN3B | S20C |
2: Chemical composition
Grade | C | Si | Mn | P | S | Cr | Mo | Ni |
1020 | 0.18-0.23 | / | 0.30-0.60 | 0.040Max | 0.050Max | / | / | / |
C22E/1.1151 | 0.17-0.24 | 0.40Max | 0.40-0.70 | 0.030Max | 0.035Max | 0.40Max | 0.10Max | 0.40Max |
20# | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | 0.035Max | 0.035Max | 0.25Max | / | 0.30Max |
070M20 | 0.16-0.24 | 0.10-0.40 | 0.50-0.90 | 0.050Max | 0.050Max | / | / | / |
S20C | 0.18-0.23 | 0.15-0.35 | 0.30-0.60 | 0.030Max | 0.035Max | 0.20Max | / | / |
3: Mechanical properties .
Mechanical properties for C22 quenching and tempering carbon steel according to EN10083-2.
Size range | Tensile strength | Yield strength | Alongation | Area of reduction | Impact value At RT/J |
d≤16 t≤8 | 500-650Mpa | 340Mpa Min | 20% Min | 50% Min | / |
16＜d≤40 8＜t≤20 | 470-620Mpa | 290Mpa Min | 22% Min | 50%Min | 50J Min |
40＜d≤100 20＜t≤60 | 630-780Mpa | 370Mpa Min | 17% Min | 45%Min | / |
Mechanical properties for C22 normalizing carbon steel according to EN10083-2 and ISO683-1.
Size range | Tensile strength | Yield strength | Alongation | Area of reduction | Impact value At RT/J |
d≤16 t≤16 | 620Mpa | 340Mpa Min | 14% Min | / | / |
16＜d≤100 16＜t≤100 | 580Mpa | 305Mpa Min | 16% Min | / | / |
100＜d≤250 100＜t≤250 | 560Mpa | 275Mpa Min | 16% Min | / | / |
Sampling and preparation of test pieces for C22 quenching and tempering steel.
1): According to EN10083-1, all samples shall be taken at a distance of 12.5mm below the heat treated surface
2): As stipulated in the contract between buyer and seller.
Mechanical properties for C22 open die forgings steel in the normalized and normalized and tempered conditions according to EN10250-2.
Size range | Tensile strength | Yield strength | Alongation | Impact value at RT/J | ||
L | Tr | L | Tr | |||
d≤100 | 410Mpa Min | 210Mpa Min | 25% Min | / | / | / |
Remark: L= Longitudinal Tr = Transverse
Sampling and preparation of test pieces for steel forging.
1: According to EN10250-1, all samples shall be taken at a distance of 4/T below the heat treated surface (with a minimum of 20mm and a maximum of 80mm), and t/2 from the end (where t is the equivalent thickness of the thickness of the ruling section of the forging at the time of heat treatment.
2: As stipulated in the contract between buyer and seller.
4: Surface hardness and hardenability.
Heat Treatment | Hardness |
Flame or Induction hardening | 50-55HRC |
Treated to improve shearability (+S) | 130-170HBW |
Soft annealed (+A) | 110-140HBW |
Quenched and tempred (+QT) | HRC28-32(Common Range) |
5: Supply size & Tolerance & Stock size
Product type | Size range | Length |
Cold drawn bar | Φ3-Φ80mm | 6000-9000mm |
Hot rolled bar | Φ16-Φ300mm | 6000-9000mm |
Hot forged bar | Φ100-Φ1200mm | 3000-5800mm |
Hot rolled plate/sheet | T:3-200mm; W:1500-2500mm | 2000-5800mm |
Hot Forged block | T: 80-800mm; W: 100-2500mm | 2000-5800mm |
Surface Finish | Turned | Milled | Grinding(Best) | Polished(Best) | Peeled(Best) | Black Forged | Black Rolled |
Tolerance | +0/+3mm | +0/+3mm | +0/+0.05mm | +0/+0.05mm | +0/+0.1mm | +0/+5mm | +0/+1mm |
Straighness | 1mm/1000mm max. | 3mm/1000mm max. | |||||
Qilu steel stock hot rolled bar and forged bars more than ten thousands tons every month, below our our stock size.
1): Stock diameter for hot rolled bar
20 | 22 | 25 | 28 | 30 | 32 | 35 | 38 | 40 | 42 | 45 | 48 | 50 | 55 | 60 |
65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 130 | 140 |
150 | 160 | 170 | 180 | 190 | 200 | 210 | 220 | 230 | 240 | 250 | 260 | 270 | 280 | 290 |
300 |
Since the stocks change everyday, if you want to know our stock available information, please contact our salesman.
6：Forging processing
Put the C22 ingot into the furnace and heat to 1150-1200℃
Forge the ingot, forging temperature should be not less than 800-850℃
Cooling in the air after forged
7: Heat treatment
Soft annealed:
Heat C22 steel to 680-720℃ in the furnace
Soak at this temperature in the furnace
Cooling in the furnace
Normalized:
Heat C22 steel to 880-920℃ in the furnace
Soak at this temperature in the furnace
Cooling in the air
Quenching and tempering:
Heat C22 steel to 860-900℃ in the furnace
Soak at this temperature in the furnace
Quench in water
Temper steel at 550-660℃ in the furnace
Take out of C22 steel from furnace and cool in the air.
Remark: The conditions given above are for guidance, at the temperatures at the lower end of the range are generally applicable to hardening in water and those at the upper end for hardening in oil.
8: Weldability
C22 steel has good weldability. For steel materials, weldability has a strong relationship with the carbon content. When the carbon content is less than 0.25%, the weldability is generally good. The carbon content of C22 steel is around 0.17%-0.24%, which is below this threshold, so the weldability is excellent.
9：Application
C22 steel has good plasticity, toughness and weldability, while being easy to machine and heat treat. The following are the main application areas and uses of C22 steel.
Mechanical Manufacturing
1): Shaft parts: such as drive shafts, connecting rods, etc.
2): Gears and racks: for low-speed, low-load gears.
3): Bolts, nuts and washers: for general fasteners.
Automotive Industry
1): Chassis parts: such as brackets, brackets, etc.
2): Connecting parts: such as bolts, pins, etc.
3): Structural parts: e.g. body support parts
Building and Structural Engineering
1): Steel structural parts: e.g. bridges, supports, frames, etc.
2): Bolts and connectors: for connection and fixing of building structures.
Pipes and Vessels
1): Water and gas pipes: for general low-pressure fluid transportation.
2): Tanks and containers: for storing non-corrosive liquids or gases.
Tools and Molds
1): Hand tools: such as wrenches, pliers, etc.
2): Mold parts: such as low load stamping dies.
General Purpose Parts
1): Pins, bushings and shims.
2): Springs and elastic elements (after suitable heat treatment).
C22 / 1.0402 is a low carbon structural steel belonging to the European standards EN 10083-2 and EN 10250-2. It is widely used in various industries, such as general engineering, construction, and machinery manufacturing, due to its good machinability and weldability. So, you could find its equivalents in different national standards, such as American Standard ASTM 1020 (ASTM A20), Japanese Standard S20C (JIS G4051), Chinese Standard 20# (GB/T 699), and British Standard EN3B/070M20 (BS 970).
C22 is a low carbon steel series with a carbon content of 0.17-0.24%. It is typically supplied in the untreated or normalized condition, where it exhibits good ductility and toughness. Although it has lower strength compared to medium or high carbon steels, it is suitable for applications requiring good formability and weldability, such as shafts, bolts, and lightly stressed components. If higher strength is required, it can be further improved through heat treatment processes like case hardening or surface hardening.
1: Steel equivalent
Country | USA | Europe | China | British | Japan |
Standard | ASTM A29 | EN10083-2 | GB/T699 | BS970 | JIS G4051 |
Grade | 1020 | C22/1.0402 | 20# | 070M20/EN3B | S20C |
2: Chemical composition
Grade | C | Si | Mn | P | S | Cr | Mo | Ni |
1020 | 0.18-0.23 | / | 0.30-0.60 | 0.040Max | 0.050Max | / | / | / |
C22E/1.1151 | 0.17-0.24 | 0.40Max | 0.40-0.70 | 0.030Max | 0.035Max | 0.40Max | 0.10Max | 0.40Max |
20# | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | 0.035Max | 0.035Max | 0.25Max | / | 0.30Max |
070M20 | 0.16-0.24 | 0.10-0.40 | 0.50-0.90 | 0.050Max | 0.050Max | / | / | / |
S20C | 0.18-0.23 | 0.15-0.35 | 0.30-0.60 | 0.030Max | 0.035Max | 0.20Max | / | / |
3: Mechanical properties .
Mechanical properties for C22 quenching and tempering carbon steel according to EN10083-2.
Size range | Tensile strength | Yield strength | Alongation | Area of reduction | Impact value At RT/J |
d≤16 t≤8 | 500-650Mpa | 340Mpa Min | 20% Min | 50% Min | / |
16＜d≤40 8＜t≤20 | 470-620Mpa | 290Mpa Min | 22% Min | 50%Min | 50J Min |
40＜d≤100 20＜t≤60 | 630-780Mpa | 370Mpa Min | 17% Min | 45%Min | / |
Mechanical properties for C22 normalizing carbon steel according to EN10083-2 and ISO683-1.
Size range | Tensile strength | Yield strength | Alongation | Area of reduction | Impact value At RT/J |
d≤16 t≤16 | 620Mpa | 340Mpa Min | 14% Min | / | / |
16＜d≤100 16＜t≤100 | 580Mpa | 305Mpa Min | 16% Min | / | / |
100＜d≤250 100＜t≤250 | 560Mpa | 275Mpa Min | 16% Min | / | / |
Sampling and preparation of test pieces for C22 quenching and tempering steel.
1): According to EN10083-1, all samples shall be taken at a distance of 12.5mm below the heat treated surface
2): As stipulated in the contract between buyer and seller.
Mechanical properties for C22 open die forgings steel in the normalized and normalized and tempered conditions according to EN10250-2.
Size range | Tensile strength | Yield strength | Alongation | Impact value at RT/J | ||
L | Tr | L | Tr | |||
d≤100 | 410Mpa Min | 210Mpa Min | 25% Min | / | / | / |
Remark: L= Longitudinal Tr = Transverse
Sampling and preparation of test pieces for steel forging.
1: According to EN10250-1, all samples shall be taken at a distance of 4/T below the heat treated surface (with a minimum of 20mm and a maximum of 80mm), and t/2 from the end (where t is the equivalent thickness of the thickness of the ruling section of the forging at the time of heat treatment.
2: As stipulated in the contract between buyer and seller.
4: Surface hardness and hardenability.
Heat Treatment | Hardness |
Flame or Induction hardening | 50-55HRC |
Treated to improve shearability (+S) | 130-170HBW |
Soft annealed (+A) | 110-140HBW |
Quenched and tempred (+QT) | HRC28-32(Common Range) |
5: Supply size & Tolerance & Stock size
Product type | Size range | Length |
Cold drawn bar | Φ3-Φ80mm | 6000-9000mm |
Hot rolled bar | Φ16-Φ300mm | 6000-9000mm |
Hot forged bar | Φ100-Φ1200mm | 3000-5800mm |
Hot rolled plate/sheet | T:3-200mm; W:1500-2500mm | 2000-5800mm |
Hot Forged block | T: 80-800mm; W: 100-2500mm | 2000-5800mm |
Surface Finish | Turned | Milled | Grinding(Best) | Polished(Best) | Peeled(Best) | Black Forged | Black Rolled |
Tolerance | +0/+3mm | +0/+3mm | +0/+0.05mm | +0/+0.05mm | +0/+0.1mm | +0/+5mm | +0/+1mm |
Straighness | 1mm/1000mm max. | 3mm/1000mm max. | |||||
Qilu steel stock hot rolled bar and forged bars more than ten thousands tons every month, below our our stock size.
1): Stock diameter for hot rolled bar
20 | 22 | 25 | 28 | 30 | 32 | 35 | 38 | 40 | 42 | 45 | 48 | 50 | 55 | 60 |
65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 130 | 140 |
150 | 160 | 170 | 180 | 190 | 200 | 210 | 220 | 230 | 240 | 250 | 260 | 270 | 280 | 290 |
300 |
Since the stocks change everyday, if you want to know our stock available information, please contact our salesman.
6：Forging processing
Put the C22 ingot into the furnace and heat to 1150-1200℃
Forge the ingot, forging temperature should be not less than 800-850℃
Cooling in the air after forged
7: Heat treatment
Soft annealed:
Heat C22 steel to 680-720℃ in the furnace
Soak at this temperature in the furnace
Cooling in the furnace
Normalized:
Heat C22 steel to 880-920℃ in the furnace
Soak at this temperature in the furnace
Cooling in the air
Quenching and tempering:
Heat C22 steel to 860-900℃ in the furnace
Soak at this temperature in the furnace
Quench in water
Temper steel at 550-660℃ in the furnace
Take out of C22 steel from furnace and cool in the air.
Remark: The conditions given above are for guidance, at the temperatures at the lower end of the range are generally applicable to hardening in water and those at the upper end for hardening in oil.
8: Weldability
C22 steel has good weldability. For steel materials, weldability has a strong relationship with the carbon content. When the carbon content is less than 0.25%, the weldability is generally good. The carbon content of C22 steel is around 0.17%-0.24%, which is below this threshold, so the weldability is excellent.
9：Application
C22 steel has good plasticity, toughness and weldability, while being easy to machine and heat treat. The following are the main application areas and uses of C22 steel.
Mechanical Manufacturing
1): Shaft parts: such as drive shafts, connecting rods, etc.
2): Gears and racks: for low-speed, low-load gears.
3): Bolts, nuts and washers: for general fasteners.
Automotive Industry
1): Chassis parts: such as brackets, brackets, etc.
2): Connecting parts: such as bolts, pins, etc.
3): Structural parts: e.g. body support parts
Building and Structural Engineering
1): Steel structural parts: e.g. bridges, supports, frames, etc.
2): Bolts and connectors: for connection and fixing of building structures.
Pipes and Vessels
1): Water and gas pipes: for general low-pressure fluid transportation.
2): Tanks and containers: for storing non-corrosive liquids or gases.
Tools and Molds
1): Hand tools: such as wrenches, pliers, etc.
2): Mold parts: such as low load stamping dies.
General Purpose Parts
1): Pins, bushings and shims.
2): Springs and elastic elements (after suitable heat treatment).
