DIN 1.2550
DIN 1.2550 properties and heat treatment forged piece, Including DIN 1.2550 application and specifications, We have all specifications，Including DIN 1.2550 steel plate, DIN 1.2550 sheet, DIN 1.2550 square steel, DIN 1.2550 flat bar,DIN 1.2550 round bar,DIN 1.2550 forgings, we can own production and sales.
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We can produce the DIN 1.2550 has the following specifications:
Round bar steel: 1mm to 3000mm
Square-shape steel: 1mm to 2000mm
Plate steel:0.1mm to 2500mm
Width: 10mm to 2500mm
Lenth: We can supply any lenth based on the customer's requirement.
Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes
Tubings: OD: φ6-219 mm, with wall thickness ranging from 1-35 mm.
Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement
Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement
Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.
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Chemical composition % of the ladle analysis of grade DIN 1.2550 and Standards
| Category | steel |
| Class | Tool steel |
| Type | Shock-resisting steel |
| Designations | France: AFNOR 55 WC 20 Germany: DIN 1.2550 Italy: UNI 58 WCr 9 KU United States: ASTM A681 , FED QQ-T-570 , SAE J438 , UNS T41901 |
| Composition |
|
| Mechanical Properties |
| Properties | Conditions | ||
| T (°C) | Treatment | ||
| Density (×1000 kg/m3) | 7.88 | 25 | |
| Poisson's Ratio | 0.27-0.30 | 25 | |
| Elastic Modulus (GPa) | 190-210 | 25 | |
| Tensile Strength (Mpa) | 690 | 25 | annealed more |
| Yield Strength (Mpa) | 415 | ||
| Elongation (%) | 24 | ||
| Reduction in Area (%) | 52 | ||
| Hardness (HRB) | 96 | 25 | annealed more |
| Impact Strength (J) (Charpy unnotched) |
249 | 25 | oil quenched from 930°C, single tempered at 205°C more |
| Thermal Properties |
| Properties | Conditions | ||
| T (°C) | Treatment | ||
| Thermal Expansion (10-6/ºC) | 12.4 | 20-100 more | |
Machining performance
Download DIN 1.2550 the mechanical properties of the report, the report provides detailed performance analysis and application. Download >>
Principal Design Features
One of the most widely used precipitation hardening grades in the business. While soft and ductile in the solution annealed condition, it is capable of high properties with a single precipitation or aging treatment. Characterized by good corrosion resistance, high harness, toughness and strength.
Machinability
Long, gummy chips characterize this alloys machinability. It can be machined in the annealed condition, however condition H1150M will yield best results. Post machining solution treatment of parts will be required prior to final hardening if machining in this condition.
Heat Treatment
CONDITION A--Soak at 1900 F (1038 C) for 30 minutes and cool below 60 F (16 C) for complete martensite transformation. CONDITION H 950- Treat Condition A material at 900 F(482 C) for 1 hour, air cool.. CONDITION H925, H1025, H1075, H1100, H1150- Soak solution treated material for 4 hours at specified temperature, air cool, CONDITION H1150M- Soak solution treated material at 1400 F (760 C) for 2 hours, air cool, then re-heat to 1150 F (620 C) for 4 hours and air cool.
Welding
Successfully welded by common fusion and resistance methods, this alloy should not be joined by oxyacetylene welding. AWS E/ER630 filler metal is recommended if required.
Forging
Soak for 1 hour at 2150 F (1177 C) prior to forging. Do not work below 1850 F (1010 C). Post-work solution treatment is required prior to final hardening.