1.4057 / 431 Hot Work Tool Steel
Type:Round bar
Delivery condition: Annealed black surface/Turned bright surface/Q+T
Products Description
1.4057 is a kind of steel with better strength and toughness in martensitic stainless steel. It is a low carbon chrome-nickel type corrosion resistant steel with high strength and hardness. It has good corrosion resistance to oxidizing acids (nitric acid at a certain temperature and concentration, most organic acids) and organic acid aqueous solution Sub-temperature quenching can effectively inhibit the high temperature temper brittleness of the steel. It can reduce the brittle transition temperature of the steel, improve the toughness, change the fracture morphology from quasi-cleavage type to dimple type, and transfer the alloy elements to the matrix and δ- The enrichment degree in ferrite increases, which can improve the toughness of steel while maintaining a high strength level. However, this steel has poor weldability and is prone to crack, so it is not suitable to weld when manufacturing tools.
Electrical performance
Resistance : 0 .60 x10 ^ -6 Ω .m
Maximum temperature: corrosion: 400℃
Thermal conductivity: 25 W / mK
1.4057 Application field:
Applicable to manufacturing parts requiring high strength, toughness, plasticity and corrosion resistance as well as load-bearing parts working in excessive moisture medium.
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Products parameters
|
Standards |
DIN |
AISI |
JIS |
ГОСТ |
|
X17CrNi16-2 |
1.4057 |
431 |
SUS431 |
|
1.4057 Equivalents’ Chemical Composition
|
C |
Si |
Mn |
P |
S |
Cr |
Ni |
V |
|
0.12-0.22 |
≤1.00 |
≤1.50 |
≤0.030 |
≤0.030 |
15.0-17.0 |
1.50-2.50 |
0.40-0.70 |
1.4507 (431) Mechanical properties
|
Steel properties : |
This steels with the high content of chrome have good resistance to the formation of scales and corrosion. These properties predetermine them for the usage in the glass molds industry. It is usually delivered in the ESR quality. |
|
Applications :
|
Molds for pressing of glass for the industrial glass with high requirements for the glass quality, also for highly meltable, technical, tempered glass. Manufacturing of pressing die moulds, blowing moulds and section rolls. |
|
Size range : |
Diameter (mm) |
Thickness (mm) |
Width (mm) |
|
50 - 500 |
20 - 400 |
Max 810 |
|
Delivery condition : |
Soft annealed to max. 295 HB |
Heat Treatment:
|
Soft annealing |
Temperature(°C) |
Cooling |
Hardness |
|
750 - 850 |
furnace |
max. 295 HB |
|
Forging |
Temperature(°C) |
Cooling |
|
|
800 - 1000 |
furnace |
|
Hardening |
Temperature(°C) |
Cooling |
Tempering |
|
|
990 - 1070 |
oil or air |
see tempering diagram |
| Hardness (annealed) b +A HBW max. | Hardening test | |||
| Austenitizing temperature °C (±10 °C) | Quenching medium | Tempering temperature °C (±10 °C) | Hardness HRC min. | |
| 229 | 800 | oil | 180 | 60 |
Product Picture
Our factory
Steel Making
Ingot Production
Forged Bars
Machinary
1.4057 /431 Tool Steel Characteristics
1.4057 stainless steel usually contains: 15 - 17% chromium; 2% - 2.5% nickel; 0.12 - 0.22% carbon. It may also contain small amounts of silicon, molybdenum and phosphorus.
Chromium is the main alloying element of martensitic 1.4057 stainless steel, which inherently has medium corrosion resistance to materials with high strength and hardness. Generally, nickel with a concentration of 2 - 2.5% is added as a stabilizing element to ensure that martensitic steel maintains its toughness during heat treatment, thus allowing the manufacture of a range of component types.
1.4057 m martensitic stainless steel is often forgotten, possibly because their demand is not high compared with austenitic and ferritic stainless steel. However, they often play a huge and often unknown role in modern infrastructure. The strength obtained by heat treatment depends on the carbon content of the alloy. Increasing the carbon content will increase the potential hardness and strength, but will reduce the toughness and ductility.
Higher carbon grades can be heat treated to a hardness of up to 60 HRC. The best corrosion resistance can be achieved under heat treatment, hardening and tempering conditions. Other martensitic grades are formed by adding nickel and nitrogen, but the carbon content is lower than the traditional grades. 431 (1.4057) stainless steel has better weldability, toughness and corrosion resistance.
Packing & Delivery
Packing & Delivery
-
The inner size of container is below:
-- 20ft GP: 5.8m(length) x 2.13m(width) x 2.18m(high)
-- 40ft GP: 11.8m(length) x 2.13m(width) x 2.18m(high)
-- 40ft HG: 11.8m(length) x 2.13m(width) x 2.72m(high)
Our Service
1. Competitive price and quality from our own factory .
2. Best service with 24 hour`s reply .
3. Flexible payment with T/T,L/C , etc .
4. Smooth production ability(1000tons/month).
5. Quick delivery and standard exporting package.
Relevant Steel Specifications of AISI T4 High Speed Tool Steels
| Country | USA | German | Japan |
| Standard | ASTM A600 | DIN EN ISO 4957 | JIS G4403 |
| Grades | T4/T12004 | S 18-1-2-5/1.3255 | SKH3 |
AISI T4 Tool Steel and Equivalents’ Chemical Composition
| ASTM A600 | C | Mn | P | S | Si | Cr | V | W | Mo | Co | ||||||||
| T4 | 0.70 | 0.80 | 0.10 | 0.40 | 0.03 | 0.03 | 0.20 | 0.40 | 3.75 | 4.50 | 0.80 | 1.20 | 17.50 | 19.00 | 0.40 | 1.00 | 4.25 | 5.75 |
| DIN ISO 4957 | C | Mn | P | S | Si | Cr | V | W | Mo | Co | ||||||||
| S 18-1-2-5/1.3255 | 0.75 | 0.83 | … | 0.40 | 0.03 | 0.03 | … | 0.45 | 3.80 | 4.50 | 0.80 | 1.20 | 17.50 | 18.50 | 0.50 | 0.80 | 4.50 | 5.50 |
| JIS G4403 | C | Mn | P | S | Si | Cr | V | W | Mo | Co | ||||||||
| SKH3 | 0.73 | 0.83 | … | 0.40 | 0.03 | 0.03 | … | 0.45 | 3.80 | 4.50 | 0.80 | 1.20 | 17.00 | 19.00 | … | … | 4.50 | 5.50 |
Mechanical Properties of T-4 Steel
| Properties | Metric | Imperial |
| Modulus of elasticity | 190-210 GPa | 27557-30458 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
Thermal Properties of T4 Tool Steels
| Properties | Metric | Imperial |
| Thermal expansion co-efficient | 11.9 µm/m°C | 6.6 µin/in°F |
Forging of ASTM T4 Tool Steel Materials
Forging of T4 steel can be carried out from 850 to 1120°C (1775 to 2100°F).
Preheat T4 steel material uniformly and slowly to 860-880°C.
Increase the forging temperature up to 1050-1120°C.
T4 hss tool steel should be cooled very slowly after forging.
AISI/ASTM T4 Tool Steel Heat Treatment and Properties
Hardening:
Harden T4 high speed tool steel from a temperature of 1260-1290oC followed by oil, air quenching or warm bath at 550oC. Hardness after quenching is 63-66 HRC.
Annealing:
T4 steel should be annealed after hot working. Increase the temperature of T4 high speed steel to 860°C(Max220°C per hour). Hold at the temperature and then cool slowly with the furnace. The annealed hardness achieved should be below HB255.
Tempering:
Tempering temperature: 2x 560-580oC. Hardness after tempering is 64-65 HRC.
Etiquetes populars: 1.4057 / 431 hot work tool steel
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