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Address: No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
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ISO Standard X20Cr13 Alloy Stainless Steel Round Bar / 1.4021 Stainless Steel Bar
| Product Name | ASTM A276 202/304/316/316L Stainless steel rod stainless steel round bar |
| Standard | ASTM A276/A582/A167/A176/A666/A240/A887/A269/A312/A511/A554/A249/A580/A581/A313 |
| 200 Series:201/202/204Cu 300 Series:301/302/303/304/304L/309/309S/310/310S/316/316L/316Ti/317L/321/347 400 Series: 410/416/420/430/430F/430FR/440C/444/446 600 Series: 630/17-5PH,631/17-7PH 900 Series:904L Duplex:S32205/2205,S32750/2507,F55 Others:XM-19,XM-25,AL-6XN | |
| Finish | Black/Bright/Polished/Satin |
| Shape | Round/Square/Rectangular or Customized |
| Quality Control | Mill Test Certification is supplied with shipment,Third Party Inspection is acceptable. |
| MOQ | 100KG |
| Delivery Time | 5-10 days after the deposit received. |
| Package | Standard Seaway Packing,Wooden case can be also provided. |
| Application | 1)Further making utensil. 2)Solar reflective film 3)The appearance of the building 4)Interior decorating:ceilings,walls,etc. 5)Furniture cabinets 6)Elevator decoraction 7)Signs,nameplate,bags making. 8)Decorated inside and outside the car 9)Household appliances:refrigerators,microwave ovens,audio equipment,etc. 10)The consumer electronics:mobile phones,digital cameras,MP3,U disk,etc. 11) Industry Products |
| Payment Item | 30% TT deposit+70% TT balance before delivery. |
EN 1.4021 stainless steel is a martensitic stainless steel formulated for primary forming into wrought products. 1.4021 is the EN numeric designation for this material. X20Cr13 is the EN chemical designation.
It has a moderately low embodied energy among the wrought martensitic stainless steels in the database.
The properties of EN 1.4021 stainless steel include five common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare EN 1.4021 stainless steel to: wrought martensitic stainless steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
X20Cr13 and X30Cr13 steel both belong to the European standard EN10088. As the representative steels of high chromium stainless steels,they both belong to martensitic stainless steels and have good machining performance.
After heat treatment(quenching and tempering),they all have excellent corrosion resistance,polishing properties,and high strength and wear resistance.However, in comparison, on the basis of the same chromium content, X20Cr13 has a lower content, which means that the corrosion resistance is relatively high and the strength is relatively low.The hardness of X30Cr13 is relatively high, and it is more suitable for the manufacture of plastic molds that are subjected to high load, high wear resistance and corrosive media
| Grade | C | Si | Mn | P | S | Cr |
| X20Cr13/1.4021 | 0.16-0.25 | ≤1.0 | ≤1.5 | ≤ 0.04 | ≤ 0.015 | 12-14 |
| X30Cr13/1.4028 | 0.26-0.35 | ≤1.0 | ≤1.5 | ≤ 0.04 | ≤ 0.015 | 12-14 |
| X20Cr13 | X30Cr13 | |
| China | 20Cr13/2Cr13 | 30Cr13/3Cr13 |
| USA | 420/S42000 | 420/S42000 |
| Japan | SUS420J1 | SUS420J2 |
| X20Cr13/1.4021 | X30Cr13/1.4028 | |||
| Density, g/cm3 | 7.75 | 7.76 | ||
| Ac1,℃ | 820 | 780 | ||
| Ar1,℃ | 820 | 780 | ||
| Ms,℃ | 300-350 | 240 | ||
| Melting point,℃ | 1470-1510 | 1365 | ||
| Specific heat capacity,(0~100℃),kj/(kg.k) | 0.46 | 0.47 | ||
| Thermal conductivity W/(m.K) | 100℃ | 500℃ | 100℃ | 500℃ |
| 22.2 | 26.4 | 25.1 | 25.5 | |
| Linear expansion coefficient,10^-6/k | 0~100℃ | 0~500℃ | 0~100℃ | 0~500℃ |
| 10.3 | 12.2 | 10.5 | 12.0 | |
| Resistivity(20℃),Ω.mm2/m | 0.55 | 0.52 | ||
| Longitudinal modulus of elasticity (20℃),kN/mm2 | 200 | 219 | ||
| Magnetic | Magnetic | Magnetic | ||
| X20Cr13 | X30Cr13 | |
| Initial Forging Temperature | 1100℃-1150℃ | 1100℃ |
| Final Forging Temperature | 850-900℃ | Min 850℃ |
| Forging Ratio | ≥4:1 | ≥4:1 |
| Post-Forging Treatment | Slow cooling | Slow cooling |
| X20Cr13 | X30Cr13 | |
| AnnealingTemperature | 730-790℃ | 730-790℃ |
| Cooling Method | Furnance Cooling | Furnance Cooling |
| Hardness | 160-187HB | <207HB |
X20Cr13 | X30Cr13 Steel Mechanical Properties in Annealed condition
| Grade | Tensile Strength | Elongation | Hardness |
| X20Cr13 | Max 700Mpa | Min 15% | ≤225HBW |
| X30Cr13 | Max 740Mpa | Min 15% | ≤235HBW |
| X20Cr13+QT | X30Cr13+QT | |
| Quenching temperature | 950-1050℃ | 950-1050℃ |
| Cooling Type | oil,air | oil,air |
| Tempering temperature | 200-350℃ | 200-350℃ |
What is X20Cr13+QT650 and X20Cr13+QT750?
In fact, QT650 indicates the state of heat treatment, QT is
quenching and tempering heat treatment, and 650 indicates that the
tensile strength after quenching and tempering reaches more than
650Mpa.
In the same way, QT750 means that the tensile strength after
quenching and tempering heat treatment reaches more than 750Mpa.
| X20Cr13+QT650 | X20Cr13+QT750 | |
| Quenching temperature | 950-1010℃ | 950-1010℃ |
| Cooling Type | oil,air | oil,air |
| Tempering temperature | 700-780℃ | 620-700℃ |
Mechanical Properties For QT650 &QT750
| Grade | Tensile Strength | 0.2% Proof Strength | Elongation |
| +QT650 | 650-850Mpa | Min 450 | Min 12% |
| +QT750 | 750-950Mpa | Min 550 | Min 10% |
What is X30Cr13+QT800?
After quenching and tempering heat treatment, the tensile strength of X30Cr13 steel reaches more than 800Mpa, which is QT800
| X30Cr13+QT800 | |
| Quenching temperature | 950-1010℃ |
| Cooling Type | oil,air |
| Tempering temperature | 650-730℃ |
Mechanical Properties For QT800
| Grade | Tensile Strength | 0.2% Proof Strength | Elongation |
| +QT800 | 800-1000Mpa | Min 600 | Min 10% |
Round bar: Dia 16-200mm As rolled
Round bar: Dia 80-400mm As forged
| Surface Finish | Black-Forged | Black-Rolled | Turned | Grinding | Polished | Peeled | Cold Drawn |
| Tolerance | (0,+5mm) | (0,+1mm) | (0,+3mm) | Best h9 | Best h11 | Best H11 | Best H11 |
