GB Cr5Mo1V | JIS SKD12 | DIN 1.2363 | BS BA2 | ASTM A2/T30102 Cold Work Tool Steel
Port: Hu nan
Supply Ability: 10000 Ton/Tons per Year 2000MT/month
Min.Order Quantity: 10 Ton/Tons
Your present location:Home > Products > Cold Work Tool Steel
-
Quick Details
1: AISI A2 steel introduction
AISI A2 tool steel is one of 'A' group cold works steel in ASTM A681 standard. A2 Tool Steel is a versatile, air hardening chromium alloy tool steel that replaces O1 tool steel when safer hardening, less distortion and increased wear resistance are required. AISI type A2 steel is intermediate in wear resistance between O1 oil-hardening tool steel and D2 high-carbon, high-chromium tool steel.
2: AISI A2 Steel equivalentCountry China Japan Germany USA UK Standard GB/T 1299 JIS G4404 DIN EN ISO4957 ASTM A681 BS 4659 Grade Cr5Mo1V SKD12 1.2363/X100CrMoV5 A2/T30102 BA2
3: AISI A2 steel chemical composition
Grade C Mn P S Si Cr V Mo A2/T30102 0.95 1.05 0.40 1.00 0.03 0.03 0.10 0.50 4.75 5.50 0.15 0.50 0.90 1.40 1.2363/
X100CrMoV50.95 1.05 0.40 0.80 0.03 0.03 0.10 0.40 4.80 5.50 0.15 0.35 0.90 1.20 SKD12 0.95 1.05 0.40 0.80 0.03 0.03 0.10 0.40 4.80 5.50 0.15 0.35 0.90 1.20 BA2 0.95 1.05 0.30 0.70 0.035 0.035 . . . 0.40 4.75 5.25 0.15 0.40 0.90 1.10
4: AISI A2 steel mechanical properties
The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment, the mechanical properties will be different, such as normalized, tempered, QT. If you want to know the properties, kindly contact the salesman.
5: AISI A2 steel overviewsSize Round Dia 6-1200mm Plate/Flat/Block Thickness
6mm-500mmWidth
20mm-1000mmProcess EAF+LF+VD+Forged+Heat treatment(optional) Heat treatment Normalized ; Annealed ; Quenched ; Tempered Surface condition Black; Peeled; Polished; Machined; Grinded; Turned; Milled Delivery condition Forged; Hot rolled; Cold drawn Test Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc. Payment terms T/T;L/C;/Money gram/ Paypal Trade terms FOB; CIF; C&F; etc.. Packing Standard Packages, or as Customers Request
Delivery time 30-45 days Application AISI A2 is suitable for applications such as Blanking dies, block and ring gauges, coining, cold forming, cold trimming and forming dies, cold shears, rolls, knurls and knurling tools, machine parts, mandrels, punches and punch plates, reamers, shear and slitter blades, stamping dies and threading tapes.
6: Heat Treatment
Stress relieving
After heavy grinding or machine it is advisable to stress relieve tool steel A2 to reduce the danger of cracking or distortion during subsequent heat treatments. Heat slowly to 670-700°C, soak for a minimum of two hours per 25mm of section then cool down in the furnace.
Annealing
To prevent decarburization use a controlled atmosphere furnace or pack in a sealed container using some inert material. To anneal A2 tool steel for lowest hardness, heat slowly to 899°C(1650°F) and hold at this temperature for about two hours per inch of greatest cross-section. Cool steel A2 at a rate of 20°F (10°C) per hour to 650°C (1200°F) and reheat to 732°C (1350°F); hold 3 hours per inch of greatest cross-section; furnace cool at 20 degrees per hour to 593°C (1100°F); then furnace-cool to 482°C (900°F) and air-cool.
Hardening
Preheating temperature: 1200–1380°F (650–750°C). Austenitizing temperature: 1700 –1780°F (925–970°C) but usually 1720–1760°F (940–960°C).
Tempering
Choose the tempering temperature according to the hardness required by reference to the tempering graph.
Heat uniformly and thoroughly to the desired temperature and hold for 25 minutes per cm of thickness. Tool steel A2 can be double tempering, after intermediate cooling to room temperature. Temper at 200°C for a balance of hardness and strength or 350°C where strength is more important than hardness. A minimum holding time of 2 hours per inch of greatest cross-section should be used.
Quenching
Martempering bath or fluidized bed at 360–430°F (180–220°C) or 840–1020°F (450–550°C) then cool in air
Circulating air or atmosphere
Vacuum furnace with overpressure of gas at cooling
Oil (only for small and uncomplicated tools)
7: Delivery condition
For hot forged or hot rolled bar, usually the delivery condition is hot forged or rolled, annealed, rough turned.
For hot forged plate, usually the delivery condition is hot forged, annealed, milled surface.
For hot rolled plate, usually the delivery condition is hot rolled, annealed, black surface.
