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
X20Cr13 | X30Cr13 STEEL CHEMICAL COMPOSITION
| 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 STEEL EQUIVALENT GRADE
| X20Cr13 | X30Cr13 |
| China | 20Cr13/2Cr13 | 30Cr13/3Cr13 |
| USA | 420/S42000 | 420/S42000 |
| Japan | SUS420J1 | SUS420J2 |
X20Cr13 | X30Cr13 STEEL PHYSICAL PROPERTY
| 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 STEEL FORGING
| 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 STEEL HEAT TREATMENT
- X20Cr13 | X30Cr13 Annealing
| 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 | X30Cr13 Quenching & Tempering(QT)
| 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% |
X20Cr13 | X30Cr13 STEEL SUPPLY FORM & SIZE & TOLERANCE
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 |
