Q235 Carbon Round Steel Bar
◆ Standards
| Q235 Steer Bar | GB | ASTM | EN | JIS | ISO |
| Q235A
Q235B Q235C Q235D |
Gr.D
Gr.65 |
S235JR
S235JRG1 S235JRG2 S235JO S235J2G3 S235J2G4 |
SS440
SM400A SM400B |
E235B
E235C E235D |
◆ Properties
Chemical properties:
| Q235 Carbon Steel Bar | Grade | C | Si | Mn | P | S |
| A | ≤0.22 | ≤0.35 | ≤0.14 | ≤0.045 | ≤0.050 | |
| B | ≤0.20 | ≤0.045 | ||||
| C | ≤0.17 | ≤0.040 | ≤0.040 | |||
| D | ≤0.035 | ≤0.035 |
Mechancal properties:
| Q235 Round Steel Bar | Grade | Yield Strength ReH/(N/mm2) | Tensile strength
Rm/(N/mm2) |
|||||
| Thickness (or diameter)/mm | ||||||||
| ≤16 | ＞16~40 | ＞40~60 | ＞60~100 | ＞100~150 | ＞150~200 | |||
| A | ≥235 | ≥225 | ≥215 | ≥215 | ≥195 | ≥185 | 370~500 | |
| B | ||||||||
| C | ||||||||
| D | ||||||||
| Q235 Steel | Grade | Elongation after break A/% | Impact test (V-notch) | |||||
| Thickness (or diameter)/mm | temperature/℃ | Impact absorption energy (longitudinal)/J | ||||||
| ≤40 | ＞40~60 | ＞60~100 | ＞100~150 | ＞150~200 | ||||
| A | ≥26 | ≥25 | ≥24 | ≥22 | ≥21 | - | - | |
| B | +20 | 27 | ||||||
| C | 0 | |||||||
| D | -20 | |||||||
| Q235 Carbon Round Steel Bar | Specimen Direction | Cold bending test 180° B=2α | |
| Steel thickness (or diameter)/ mm | |||
| ≤60 | ＞60~100 | ||
| Center diameter d | |||
| vertical | 0.5α | 1.5α | |
| horizontal | α | 2α | |
◆ Characteristic
Q235 steel is a common carbon structural steel. Q represents the yield limit of this hot-rolled coil, and the latter 235 refers to the yield value of this hot-rolled coil, which is about 235MPa.But the yield value of Q235 carbon steel bar will decrease with the increase of thickness. Due to the moderate carbon content, good comprehensive performance, and good matching of strength, plasticity and welding performance, Q235 round steel bar is the most widely used.
◆ Application
1.Use Q235 carbon round steel rods to manufacture various abrasive handles and other unimportant abrasive parts.
2. Q235 steel is used as punch material, which is used directly without tempering after quenching. The hardness is 36~40HRC. Every ten punches can punch more than 2,000 bolts, and the failure mode is plastic deformation. The Q235 steel rod solves the phenomenon that the punch breaks during use and ensures the personal safety of the operator.
◆ Purchasing Information
| Product name | Q235 Carbon Round Steel Bar |
| fications | Dimensions16-400mm，etcLength:2000-12000mm，or as required |
| Standard: | ASTM，AISI，JIS，GB， DIN，EN |
| Surface treatment | Black/Peeling/Polishing/Machined |
| price terms | FOB,CRF,CIF,EXW all acceptable |
| standard export packing | inside:water proof paper,outside:steel covered with strips and pallets |
| Container size | 20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High) |
| 40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High) | |
| 40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High) | |
| Certification: | ISO, SGS，BV，Mill Certificate |
| Technique | Cold/Hot rolled, Cold-Drawn， or Hot Forged |
| Heat Treatment | Annealed; Quenched; Tempered |
| Delivery Detail | inventory About 3-5； |
| custom-made 15-20； | |
| According to order's quantity. | |
| *If you do not find what you are looking for, please call us now. If you have found it, we are happy to answer any questions or concerns you may have about stainless steel grades and assist you through the purchasing process. | |
