STKM 13A, STKM 13A Equivalent Material, JIS g3445 STKM13A Chemical Composition, JIS g3445 STKM13A Mechanical Properties, JIS g3445 grade STKM13A
Amardeep Steel Centre is a leading supplier and exporter of high-quality STKM 13A carbon steel pipes, manufactured to meet the JIS G3445 standard. With over 30 years of experience in the steel industry, we have established ourselves as a trusted supplier of top-quality steel products.
Our STKM 13A carbon steel pipes are available in a range of sizes and thicknesses to suit various industrial applications. They are widely used in automotive, hydraulic equipment, and construction machinery, as well as in the manufacturing of bicycle frames and other structural components.
At Amardeep Steel Centre, we are committed to providing our customers with the best possible products and services. Our team of experts works closely with our customers to understand their specific requirements and provide tailored solutions that meet their needs.
In addition to STKM 13A carbon steel pipes, we also offer a wide range of other steel products, including stainless steel pipes, tubes, sheets, and plates, as well as alloy steel pipes and tubes. If you're looking for a reliable supplier of STKM 13A carbon steel pipes that meet the JIS G3445 standard, look no further than Amardeep Steel Centre. Contact us today to learn more about our products and services, or to request a quote.
Table of Contents
STKM13A falls within our broader range of Carbon Steel Pipes & Tubes.
JIS G 3445 Grade STKM 13A Specification
| Grade | STKM13A |
|---|---|
| Classification | Structural steel Carbon steel |
| Standards | JIS G 3445 : Carbon steel tubes for machine structure |
| Applications | Carbon steel tubes used for machinery, automobiles, bicycles, furniture, appliances and other machine parts |
STKM 13A Chemical Compositions
| Carbon | Silicon | Manganese | Phosphorous | Sulphur | Molybdenum | Nickel | Chromium | Copper | Others |
|---|---|---|---|---|---|---|---|---|---|
| max 0.25 | max 0.35 | 0.30-0.90 | 0.04 | 0.04 | – | – | – | – | – |
Mechanical Properties of Grade STKM13A
| Property | Value |
|---|---|
| Yield Point / Proof Stress | 215 N/mm² |
| Tensile Strength | 370 N/mm² |
| Elongation | 30% |
STKM 13A Physical Properties
| Property | Value |
|---|---|
| Temperature Range | 6 – 529 °C |
| Modulus of Elasticity | 212 – 216 GPa |
| Mean Coefficient of Thermal Expansion | 4.2 – 111 × 10-6/°C |
| Thermal Conductivity | 31 – 34.2 W/m·°C |
| Specific Thermal Capacity | 529 J/kg·°C |
| Density | 7.85 kg/dm³ |
| Poisson’s Coefficient | 0.29 |
JIS G 3445 Grade STKM 13A Equivalent Grade
STKM 13A carbon steel pipes have several equivalent grades from different international standards. Here are some of the equivalent grades:
| Standard | Specification |
|---|---|
| ASTM | A519 Grade 1020, A513 MTX1025 |
| EN | 10305-1 E355+SR |
| DIN | 2391 ST52 BK+S |
| ISO | 683-1 C20E4 |
| GB/T | 8713, 3639 (20#) |
These equivalent grades are similar in terms of their chemical composition and mechanical properties to STKM 13A carbon steel pipes. However, it is important to note that there may be slight variations in the specifications of these grades, so it is always best to consult with a qualified expert before selecting an equivalent grade for a specific application.
We also stock the equivalent DIN 2391 ST52 Steel Tube & Pipe grade directly.
JIS G3445 STKM13A Pipe Sizes
The following table provides the standard pipe sizes for JIS G3445 STKM13A, including Nominal Pipe Size (NPS), Outer Diameter (OD), and Wall Thickness (WT).
Use our Steel Weight Calculator to estimate the weight of any size listed below.
| NPS | ID (in) | OD (in) | WT (in) |
|---|---|---|---|
| 1/8 | 0.269 | 0.405 | 0.068 |
| 1/4 | 0.364 | 0.540 | 0.088 |
| 3/8 | 0.493 | 0.675 | 0.091 |
| 1/2 | 0.622 | 0.840 | 0.109 |
| 3/4 | 0.824 | 1.050 | 0.113 |
| 1 | 1.049 | 1.315 | 0.133 |
| 1-1/4 | 1.380 | 1.660 | 0.140 |
| 1-1/2 | 1.610 | 1.900 | 0.145 |
| 2 | 2.067 | 2.375 | 0.154 |
| 2-1/2 | 2.469 | 2.875 | 0.203 |
| 3 | 3.068 | 3.500 | 0.216 |
| 3-1/2 | 3.548 | 4.000 | 0.226 |
| 4 | 4.026 | 4.500 | 0.237 |
| 5 | 5.047 | 5.563 | 0.258 |
| 6 | 6.065 | 6.625 | 0.280 |
| 8 | 7.981 | 8.625 | 0.322 |
| 10 | 10.020 | 10.750 | 0.365 |
| 12 | 11.938 | 12.750 | 0.406 |
| 14 | 13.124 | 14.000 | 0.438 |
| 16 | 15.000 | 16.000 | 0.500 |
| 18 | 16.876 | 18.000 | 0.562 |
| 20 | 18.812 | 20.000 | 0.594 |
| 24 | 22.624 | 24.000 | 0.688 |
STKM 13A Applications & Uses
STKM 13A carbon steel pipes are used in a wide range of applications due to their strength, durability, and versatility. Here are some of the common applications and uses of STKM 13A carbon steel pipes:
- Automotive Industry : STKM 13A carbon steel pipes are widely used in the automotive industry for making parts such as shock absorber tubes, fuel injection pipes, and hydraulic lines. Related precision tubing options include our Carbon Steel ASTM A513 DOM Tube range.
- Machinery and Equipment Manufacturing : STKM 13A carbon steel pipes are used in the manufacturing of various machinery and equipment such as construction machinery, mining equipment, and agricultural machinery.
- Bicycle Frame Manufacturing : STKM 13A carbon steel pipes are also used in the manufacturing of bicycle frames due to their strength and durability. For drivetrain and frame tubing needs, see our Driveline Tubing Manufacturer page.
- Hydraulic and Pneumatic Applications : STKM 13A carbon steel pipes are commonly used in hydraulic and pneumatic applications for carrying fluids and gases under high pressure.
- Structural Applications : STKM 13A carbon steel pipes are used in various structural applications such as in the construction of buildings and bridges, as well as in the manufacturing of scaffolding and other support structures.
Overall, STKM 13A carbon steel pipes are known for their reliability and versatility, making them a popular choice for a wide range of industrial applications.
For higher-precision hydraulic and pneumatic cylinder applications, see our STKM13C Carbon Steel Tubes.
Countries We Supply and Export JIS G3445 STKM 13A Carbon Steel Tube
Namibia, Kazakhstan, Belarus, Kenya, Japan, India, Turkey, Finland, Gambia, Taiwan, Iran, United States, Ireland, Bangladesh, Canada, Mexico, Egypt, Israel, Bulgaria, Germany, South Africa, Australia, Greece, Vietnam, Lebanon, Thailand, Hungary, Bhutan, Poland, Ecuador, Austria, Puerto Rico, Argentina, Kuwait, Spain, South Korea, Venezuela, Algeria, United Arab Emirates, Czech Republic, Sri Lanka, Jordan, Oman, Chile, Chile, Iran, Ghana, Belgium, New Zealand, Romania, Zimbabwe, Italy, Serbia, Switzerland, Slovakia, Croatia, Saudi Arabia, Trinidad & Tobago,Tunisia, Poland, Hong Kong, Nepal, Peru, Ukraine, Nigeria, France, Tibet, Indonesia, Morocco, Iraq, Denmark, Yemen, Malaysia, Portugal, Mexico, Singapore, Bolivia, Pakistan, Russia, Brazil, Bahrain, Norway, Azerbaijan, Angola, Philippines, Gabon, Lithuania, Afghanistan, Macau, Nigeria, Libya, Qatar, Netherlands, Mongolia, United Kingdom, Estonia, Costa Rica, Colombia, Sweden.
Cities We Supply and Export JIS G3445 STKM 13A Carbon steel Tube
Sydney, Mumbai, Doha, Dammam, Ulsan, Vadodara, Manama, Lagos, Kuwait City, Kolkata, Vung Tau, Kuala Lumpur, Pimpri-Chinchwad, Dubai, Hyderabad, Indore, Geoje-si, Bangkok, Haryana, Bogota, Petaling Jaya, Coimbatore, Calgary, Lahore, Visakhapatnam, Jaipur, Gurgaon, Moscow, Mexico City, Istanbul, Edmonton, Milan, Courbevoie, New York, Port-of-Spain, Baroda, Algiers, Houston, Ahmedabad, Muscat, Chandigarh, Melbourne, Los Angeles, London, Busan, Hanoi, Colombo, Secunderabad, Seoul, Al Khobar, Al Jubail, Nashik, Atyrau, Thiruvananthapuram, Rajkot, Tehran, Montreal, Jakarta, Ernakulam, Ahvaz, Karachi, Faridabad, Kanpur, Granada, Cairo, Hong Kong, Sharjah, Chiyoda, Rio de Janeiro, Gimhae-si, Aberdeen, Noida, Jamshedpur, Howrah, Brisbane, Chennai, Bhopal, Riyadh, Singapore, Ludhiana, Thane, Nagpur, Ranchi, Pune, La Victoria, Ho Chi Minh City, Madrid, Surat, New Delhi, Bengaluru, Navi Mumbai, Santiago, Toronto, Dallas, Perth, Caracas, Ankara, Jeddah.
Frequently Asked Questions About STKM 13A Carbon Steel
What is STKM 13A material?
STKM 13A is a type of carbon steel pipe or tube defined by the JIS G 3445 standard. It is specifically used for machine structural purposes in industries like automotive and machinery due to its good mechanical properties.
What is the equivalent of STKM13A steel?
STKM 13A steel has several equivalents in other international standards, such as ASTM A519 Grade 1020 and EN 10305-1 E355+SR. These materials are considered interchangeable due to their similar chemical and mechanical properties.
What is the Young's modulus of STKM13A?
The Young's modulus for STKM 13A steel is approximately 212-216 GPa. This value represents the material's stiffness, indicating its ability to resist elastic deformation under stress.
What are the STKM13A material properties?
STKM13A material properties include a yield point or proof stress of approximately 215 N/mm², a tensile strength of approximately 370 N/mm², and an elongation of around 30%, making it a ductile, easily formable carbon steel grade. Physically, it has a density of about 7.85 kg/dm³, a modulus of elasticity in the 212–216 GPa range, and a Poisson's coefficient of approximately 0.29.
What is the STKM13A chemical composition?
The STKM13A chemical composition is limited to a maximum carbon content of 0.25%, maximum silicon of 0.35%, manganese in the range of 0.30% to 0.90%, and phosphorus and sulphur each capped at a maximum of 0.04%. No specified limits apply to molybdenum, nickel, chromium, or copper for this grade under JIS G3445.
Is STKM13A the same as STKM 13A?
Yes. STKM13A and STKM 13A refer to the identical JIS G3445 grade designation; the spacing is purely a formatting convention used interchangeably across technical datasheets, mill certificates, and supplier listings, and carries no difference in chemical or mechanical specification.
What is the difference between STKM13A and STKM13C?
STKM13A and STKM13C both fall under JIS G3445 Grade 13 but differ in manufacturing method and processing. STKM13A is typically supplied in a more general structural condition, while STKM13C generally undergoes additional cold working or specific finishing to achieve tighter mechanical properties and a higher-precision surface finish, making it more suited to hydraulic and pneumatic cylinder applications.
What sizes are available in STKM13A carbon steel pipe?
STKM13A carbon steel pipe is available across standard nominal pipe sizes (NPS) ranging from 1/8" up to 24", with corresponding outer diameter and wall thickness combinations defined per JIS G3445 sizing tables. Amardeep Steel Centre also supplies custom sizes outside this standard range on request to match specific project drawings.
What industries commonly use STKM13A carbon steel tubes?
STKM13A carbon steel tubes are widely used in the automotive industry for shock absorber tubes and fuel injection pipes, in construction and agricultural machinery manufacturing, in bicycle frame production, and in hydraulic and pneumatic systems carrying pressurized fluids or gases. They are also used in structural applications such as scaffolding and support frameworks.
Related Products
- STKM13C Carbon Steel Tubes
- STKM 11A Steel Tubes
- Carbon Steel Pipes & Tubes
- DIN 2391 ST52 Steel Tube & Pipe
- JIS G3444 Tubes
- Driveline Tubing Manufacturer
- Carbon Steel Buttweld Fittings
- Carbon Steel Flanges
Get a Competitive Quote for STKM13A Carbon Steel Tubes
Amardeep Steel Centre supplies STKM13A carbon steel tubes manufactured per JIS G3445, with complete documentation including mill test certificates, third-party inspection on request, and full traceability. Ready stock available in Mumbai with worldwide export capability. We source material from Japanese, Indian, Korean, and European mills to match your exact OD, ID, and length requirement.
