ASTM A513 Type 2 MT 1010 Cold Rolled ERW Precision Steel Tube for Automotive Seat Frames
Basic Properties
Place of Origin:
Zhejiang/China
Brand Name:
TORICH
Certification:
ISO9001 ISO 14001 TS16949
Model Number:
ASTM A513
Trading Properties
Minimum Order Quantity:
1Ton
Price:
800-1000 USD/Ton
Payment Terms:
L/C,D/A,D/P,T/T
Supply Ability:
60000 Ton/Tons per Year
Product Summary
ASTM A513 Type 2 MT 1010 Cold Rolled ERW Automotive Seat Frame Tube ASTM A513 Type 2 MT 1010 Cold Rolled ERW Automotive Seat Frame Tube is a precision mechanical steel tube manufactured from cold-rolled low-carbon steel strip by electric resistance welding. ASTM A513 Type 2 specifically covers as...
Product Details
Highlight:
ASTM A513 Type 2 Precision Steel Tube
,MT 1010 Grade ERW Mechanical Steel Tube
,Cold Rolled ERW Automotive Seat Frame Tube
Product:
Cold Rolled ERW Mechanical Steel Tube
Standard:
ASTM A513/A513M
Grade:
MT 1010
Shape:
Round; Other Mechanical Profiles Available By Agreement
Outside Diameter:
9.5–300 Mm For Cold-rolled ERW Round Tubing Within ASTM A513 Scope
Wall Thickness:
0.56–3.40 Mm For Cold-rolled ERW Round Tubing Within ASTM A513 Scope
Length:
1–12 M, Fixed Lengths Available
Heat Treatment:
Normally Supplied As-welded; Stress Relieving Or Other Thermal Condition May Be Specified Where Applicable
Product Description
ASTM A513 Type 2 MT 1010 Cold Rolled ERW Automotive Seat Frame Tube
ASTM A513 Type 2 MT 1010 Cold Rolled ERW Automotive Seat Frame Tube is a precision mechanical steel tube manufactured from cold-rolled low-carbon steel strip by electric resistance welding. ASTM A513 Type 2 specifically covers as-welded tubing produced from cold-rolled steel, providing a cleaner surface, tighter dimensional control, and better forming consistency than conventional hot-rolled ERW tubing.
MT 1010 / SAE 1010 low-carbon steel is particularly suitable for automotive seat structures because its low carbon content combines adequate structural strength with good bending, flattening, stamping, welding, and end-forming capability. The tubing can be supplied as round, square, rectangular, or customer-specific sections for subsequent bending, piercing, welding, coating, and seat-frame assembly.
Product Specifications
| Item | Specification |
|---|---|
| Product | Automotive Seat Frame Tube |
| Standard | ASTM A513 / A513M |
| Type | Type 2 - As-Welded Cold-Rolled Steel, A.W.C.R. |
| Main Grade | MT 1010 / SAE 1010 |
| Material | Low-Carbon Steel |
| Manufacturing Process | Cold-Rolled Steel Strip → Roll Forming → High-Frequency ERW → Weld-Bead Control → Sizing → Straightening → Cutting |
| Tube Shape | Round, Square, Rectangular or Special Section |
| Outside Diameter | ASTM A513 Type 2 round tubing range: approximately 9.5-300 mm |
| Wall Thickness | ASTM A513 Type 2 range: approximately 0.56-3.40 mm |
| Typical Automotive Range | OD 12-60 mm; WT 0.8-2.5 mm, depending on seat-frame design |
| Length | 1-12 m, customizable; fixed-length cutting available |
| OD Tolerance | According to ASTM A513 Type 2 dimensional tables; tighter project-specific tolerances available by agreement |
| Typical Small-Diameter OD Control | ASTM Type 2 tolerance can reach approximately ±0.08 to ±0.09 mm for specified smaller size ranges |
| Wall Thickness Tolerance | According to ASTM A513 requirements and ordered wall/diameter combination |
| Straightness | Standard control according to ASTM A513; tighter straightness can be specified for automated bending and welding |
| Weld Seam | Internal weld flash as-produced or controlled according to purchase specification |
| Surface Condition | Cold-rolled bright surface, lightly oiled, dry surface, phosphate-ready or coating-ready |
| Heat Treatment | Normally supplied as-welded; stress-relieving or annealing available when forming requirements justify it |
| Processing | Precision cutting, bending, punching, drilling, swaging, end forming and welded assemblies available |
| Inspection | Dimensional inspection, tensile testing, hardness testing, flattening/flaring where specified, weld inspection and material traceability |
| Documentation | Mill Test Certificate / EN 10204 3.1 documentation available according to order requirements |
Main Characteristics
Controlled Strength and Formability
MT 1010 is a low-carbon steel grade designed to maintain a practical balance between structural strength and forming capability.
Typical minimum mechanical properties for ASTM A513 Type 2 Grade 1010 round tubing include:
- Yield Strength: approximately 221 MPa minimum
- Tensile Strength: approximately 310 MPa minimum
- Elongation: approximately 15% minimum
- Rockwell B Hardness: approximately 55 minimum depending on dimensional and delivery conditions
This combination is appropriate where automotive seat-frame components require multiple bending operations without unnecessarily increasing material strength and springback.
Cold-Rolled Surface Quality
Unlike ASTM A513 Type 1 tubing manufactured from hot-rolled steel, Type 2 tubing is produced from cold-rolled steel strip.
The resulting surface provides:
- reduced mill-scale contamination;
- more uniform surface appearance;
- improved suitability for powder coating or electrophoretic coating preparation;
- better dimensional repeatability;
- improved consistency during automated bending and fixture positioning.
Dimensional Repeatability for Seat-Frame Fabrication
For selected Type 2 small-diameter round tubing ranges, ASTM A513 outside-diameter tolerances can be approximately ±0.08 to ±0.09 mm.
This is important for seat-frame production because dimensional variation directly affects:
- CNC tube-bender setup;
- bend-radius repeatability;
- robotic welding fixtures;
- bracket positioning;
- hole alignment;
- final seat-frame geometry.
Our Advantages
1. Controlled Tube Geometry for Automated Bending
A common automotive purchasing concern is not simply whether the tube meets ASTM A513, but whether different production batches behave consistently in CNC bending equipment.
For seat-frame projects, production control can therefore be established around:
- fixed OD tolerance;
- controlled wall-thickness variation;
- specified ovality;
- specified straightness;
- consistent material hardness;
- batch-to-batch forming verification.
For critical bent components, dimensional requirements can be agreed according to the customer's drawing rather than relying only on general commercial tubing tolerances.
2. Weld-Seam Control for Bending and Secondary Processing
The ERW seam position and internal weld flash can influence tube bending, punching, swaging and end forming.
Seat-frame projects can therefore specify:
- controlled internal weld flash;
- weld-seam orientation marking;
- seam-position requirements relative to bending direction;
- weld integrity inspection;
- trial bending before mass production.
This reduces the risk of weld-area cracking, excessive distortion, tool interference or inconsistent bending behavior during component production.
3. Production Based on the Finished Seat Component
Automotive buyers frequently require more than straight tube.
Tube production parameters can be developed around the finished component drawing, including:
- fixed-length cutting;
- CNC bending;
- laser or mechanical hole processing;
- punching;
- flattening;
- swaging;
- expanding or reducing;
- end forming;
- bracket welding;
- dimensional fixture inspection.
This approach allows tube tolerance, weld-seam position and forming characteristics to be evaluated together rather than as independent specifications.
Execution Standards
| Standard System | Relevant Standard / Reference | Description |
|---|---|---|
| ASTM | ASTM A513 / A513M | Electric-resistance-welded carbon and alloy steel mechanical tubing |
| SAE | SAE 1010 | Common low-carbon chemistry designation corresponding to the 1010 material family |
| EN | EN 10305-3 | Welded cold-sized precision steel tubes; commonly considered for comparable European precision-tube applications |
| JIS | JIS G3445 | Carbon steel tubes for machine structural purposes |
| GB | GB/T 6728 / relevant precision mechanical tubing specifications | Welded structural and mechanical tubing depending on component requirements |
| GOST | Applicable GOST mechanical / precision steel tube specification | Selection should be confirmed according to required dimensions, mechanical properties and application |
Chemical Composition
| Grade | C % | Mn % | P % Max. | S % Max. |
|---|---|---|---|---|
| 1008 | 0.10 max. | 0.50 max. | 0.035 | 0.035 |
| 1010 | 0.08-0.13 | 0.30-0.60 | 0.035 | 0.035 |
| 1015 | 0.13-0.18 | 0.30-0.60 | 0.035 | 0.035 |
| 1020 | 0.18-0.23 | 0.30-0.60 | 0.035 | 0.035 |
| 1026 | 0.22-0.28 | 0.60-0.90 | 0.035 | 0.035 |
Mechanical Properties
| Property | 1008 | 1010 | 1015 | 1020 | 1026 |
|---|---|---|---|---|---|
| Yield Strength, Min. | 207 MPa | 221 MPa | 241 MPa | 262 MPa | 310 MPa |
| Tensile Strength, Min. | 290 MPa | 310 MPa | 331 MPa | 359 MPa | 427 MPa |
| Elongation in 50 mm, Min. | 15% | 15% | 15% | 12% | 12% |
| Typical Rockwell B Minimum | 50 | 55 | 58 | 62 | 68 |
| Relative Formability | Excellent | Excellent | Very Good | Good | Moderate |
| Relative Strength | Lower | Low-Medium | Medium | Medium-High | Higher |
Why MT 1010 for Automotive Seat Frames?
Compared with higher-carbon grades such as 1020 or 1026, MT 1010 normally provides lower yield strength and therefore requires less force during bending and forming.
This can benefit automotive seat-frame manufacturing by reducing:
- bending springback;
- forming-tool load;
- risk of cracking at tight bends;
- difficulty during flattening or swaging;
- variability during welding and subsequent forming.
Compared with hot-rolled ERW tubing, ASTM A513 Type 2 cold-rolled ERW tube additionally provides better surface condition and dimensional consistency.
Compared with DOM tubing, Type 2 ERW tubing is normally more economical where extremely tight ID control or very high mechanical properties are not required.
For this reason, ASTM A513 Type 2 MT 1010 is a practical material choice for high-volume automotive seat structures where cost, repeatable forming and weldability must be balanced.
Application
Automotive Front Seat Backrest Frame
One specific application is the tubular perimeter and reinforcement structure used in an automotive front seat backrest frame.
The tube is typically cut, CNC bent, locally flattened or pierced and welded to brackets, recliner interfaces and reinforcement components.
For this application, important purchasing parameters normally include:
- tube OD and wall-thickness consistency;
- bend performance;
- weld-seam integrity;
- weld-flash height;
- straightness;
- material hardness;
- hole and bracket positioning after forming;
- surface condition before electrophoretic or powder coating;
- batch traceability.
The final tube specification should therefore be defined together with the seat-frame drawing, bend geometry, joining process and assembly tolerance rather than by material grade alone.
Frequently Asked Questions
Q: Are you trading company or manufacturer?
A: manufacturer, also can do trading.
Q: How long is your delivery time?
A: Generally speaking, it is 10-15 days if the goods are in stock, or it is 30-40 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment?
A: Payment ≤ 2000USD, 100% in advance. Payment ≥ 2000USD, 30% T/T in advance, balance before shipment. If you have another question, please feel free to contact with me.
Related Products
-
Auto Parts ASTM A513 Cold Rolling Welded Steel Tubes with DOM Production
Auto Parts ASTM A513 Welded Steel Tubes with DOM production ASTM A513 Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing Applications: for Machinery, Mechanical Engineering 1. Standard: ASTM A513 cold rolling welded precision steel tubes 2. Steel Grade: SAE1010, SAE1020, other ... -
25mm Diameter Bright Annealing Seamless Steel Tube for Hydraulic Systems
EN10305-1 E235 E355 NBK Bright Annealing Precision Steel Pipes for Hydraulic Systems EN10305-1 NBK Bright Annealed Precision steel pipes for Hydraulic system OD:4-80 (mm) WT0.5-10 (mm) Length 1000-12000mm Product name: Seamless Precision Steel Pipe Application: for hydraulic systems precision steel ... -
Precision Seamless Black Phosphating Steel Tube for Hydraulic Systems
Steel Pipes with high precision for Hydraulic Systems with Black Phosphating surface Black Phosphated Hydraulic Tubes with High Precision and tight tolerance, the tubes are produced by precision cold drawn and cold rolling, then bright annealed in a protected atmosphere, afterwards it is blackphosph... -
Precision Seamless Galvanized Steel Tubes DIN2391 EN103052 ST35.0 ST37
Precision Seamless Galvanized Steel Tubes DIN2391 EN103052 ST35.0 ST37 Production Process: Cold rolling by Cold pilger machine and Cold rolling machine,galvanized and zinc plated could be applied. Cold Rolled and Galvanized Steel Tube Production process: DIN highly accurate, cold rolled and bright ...
