Acciaio per utensili ASTM T5 / 1.3265 / S18-1-2-10 / SKH4 / BT5

Acciaio per utensili ASTM T5 is one of tungsten high-speed tool steel. It belongs to ASTM A600, together with T1, T2, T4 Tool Steel etc. They are also in T group in ASTM A600 standard. AISI T5 high speed steel contains Cobalt with range 7.0~9.5%. AISI T5 steel has better high temperature performance, toughness and better cutting performance than ASTM T4 steel. Similar to T4 steel materials, T5 tool steels are also used for cutting tool, turning tool etc.

1.ASTM T5 Tool Steel Supply Range

Barra tonda in acciaio T5: diametro 2mm - 200mm
T5 Acciai piatti: spessore 2-20mm x larghezza 10-100mm
T5 Steel Plate: spessore 2-200mm x larghezza 200-810mm
Finitura superficiale: nero, grezzo, pelato, tornito o secondo i requisiti specifici.

2.Relevant Steel Specifications of AISI T5 Tool Steel

Nazione	USA	Tedesco	Giappone	britannico
Standard	ASTM A600	ISO 4957	JIS G4403	BS 4659
classi	T5 / T12005	1.3265/S18-1-2-10	SKH4	BT5

3.AISI T5 Tool Steels and Equivalents’ Chemical Composition

ASTM A600	C		Mn		P	S	Si		Cr		V		W		Mo		Co
T5	0.75	0.85	0.20	0.40	0.03	0.03	0.20	0.40	3.75	5.00	1.80	2.40	17.50	19.00	0.50	1.25	7.00	9.50
ISO 4957	C		Mn		P	S	Si		Cr		V		W		Mo		Co
1.3265/S18-1-2-10	0.72	0.80	...	0.40	0.03	0.03	...	0.45	3.80	4.50	1.40	1.70	17.50	18.50	0.50	0.80	9.00	10.00
JIS G4403	C		Mn		P	S	Si		Cr		V		W		Mo		Co
SKH4	0.73	0.83	...	0.40	0.03	0.03	...	0.45	3.80	4.50	1.00	1.50	17.00	19.00	...	...	9.00	11.00
BS 4659	C		Mn		P	S	Si		Cr		V		W		Mo		Co
BT5	0.75	0.85	...	0.40	0.35	0.35	...	0.40	3.75	4.50	1.75	2.05	18.50	19.50	...	1.00	9.00	10.00

4.High Speed Tool Steel T5 Mechanical Properties

• Proprietà fisiche degli acciai per utensili T5 ad alta velocità

Immobili	Densità kg/dm3	Temperature T °C/F	Calore specifico J / kgK	Conduttività termica W/mK	Electric resistance µΩ·cm	Modulo di elasticità kN/mm2	Temp. °C/°F	Creep strain limit (10000h) (Rp1,0) N/mm2	Creep rupture strength (10000h) (Rp1,0) N/mm2
445 (≥)	839 (≥)	42	42	34	Soluzione e invecchiamento, ricottura, sostegno, Q + T, ecc	424	883	167	975

• Mechanical Properties of HSS T-5 Steel

Proprietà	metrico	Imperial
Densità	8.75 g / cm3	0.316 lb/in3
Proprietà	metrico	Imperial
rapporto di Poisson	0.27-0.30	0.27-0.30
Modulo elastico	190-210 GPa	27557-30458 ksi

5.Forging di materiali in acciaio per utensili ASTM T5

Temperatura di formatura a caldo: 1150-900oC.

6.ASTM T5 Tool Steel Heat Treatment

• Annealing of T-5 Steel
  • Annealing is recommended after hot working and before re hardening
  • Heat the temperature to 850°C at a rate of no more than 220°C per hour.
  • Hold at the temperature for one hour per inch of thickness(at least two hours).
  • Cool slowly in the furnace or in air to ambient temperature.
  • The resultant hardness achieved should be Max 255HB or lower.

• Alleviare lo stress

Stress relieving to remove machining stresses should be carried out by heating to 600-650oC, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.

• Hardening of Steel T5
  • Preheat T5 tool steel slowly to the temperature of 820-870°C.
  • Heat to the final hardening temperature of 1250°C and make sure the material must be heated through.
  • Quench in the warm oil,and then complete the quench in air.(care must be taken at this step)
• Tempering of T-5 Steel

Tempering temperature: 550-590oC.

Temperatura di tempra (^oC) vs. Hardness (HRC)

100oC	150oC	200oC	250oC	300oC	350oC	400oC	450oC	500oC	550oC	600oC	650oC
64	64.5	63	62.5	62	62	62.5	63.6	64.8	66	64	60

7.Applicazioni di acciaio per utensili ASTM / AISI T5

ASTM T5 high speed steels are generally used as cutting tools, broaches and cold extrusion punches, turning blades, punchers, metal working blades.

Le applicazioni tipiche sono:

• trapani,
• Frese,
• Utensili per il taglio del filo,
• Zigrinatura,
• Punzoni per estrusione a freddo
• Spille ecc.

Besides AISI T5 high speed tool steel, we could also supply you T1, T2, T4, T10, T15 tool steel. Just send us your requests and have our best T5 tool steel price and other HSS tool steel offer.