Material SAE4340 Per ASTM A322 Rectangular Bar Hot Rolled Annealed 228hb Surface Free of Scale Tolerances 1mm

• Type: Square
• Standard: ASTM
• Technique: Hot Rolled
• Shape: Bar
• Surface Treatment: Polished
• Special Use: Cold Heading Steel
• Model NO.: SAE4340
• Transport Package: Wooden Box
• Specification: Width 10-2000mm
• Production Capacity: 50000kgs

Product Description

Introduction:

 

Grade 1.6511 / SAE4340 has the characteristic of high strength, toughness and good hardenability and anti-overheating stability, but the white point sensitivity is high, and there is temper brittleness.The welding property is poor, before welding, it needs to be preheated by high temperature. After welding, the stress should be eliminated and used after adjustment.

 

 

Chemical composition(%):

 

C	Si	Mn	S	P	Cr	Mo	Ni
0.38~0.43	0.15~0.35	0.60~0.80	≤0.040	≤0.035	0.70~0.90	0.20~0.30	1.65~2.00

Application:

Used as require good toughness, high strength, as well as the important conditioning of large size, heavy machinery such as high load of axial, turbine shaft, larger than 250 mm in diameter of helicopter rotor shaft, turbojet engine turbine shaft, blade, high load of transmission parts, fasteners of the crankshaft,gear, etc.
It can also be used for operating temperature over 400 ºC of rotor shaft and blade, etc. and after nitriding processing can also be used to make special performance requirements of the important parts, after low temperature tempering or can be used for ultra-high strength steel after thermal quenching.

Features:

Excellent hardenability, high toughness and good heat-resistance and fatigue-resistance.

Heat treatment:

 

Quenching		Tempering
Heating temperature/ºC	Cooling	Heating temperature/ºC	Cooling
850	Oil cooling	600	Water or oil cooling
Hardness		≤269HB

 

Mechanical properties:

Tensile strength sigma b (MPa): ≥980(100),
The elongation is delta 5 (%): ≥12,
The cross-sectional shrinkage of psi (%): ≥55.
Impact work Akv (J) is greater than 25, impact toughness value alpha kv (J/cm2): ≥98 (10).

Delivery time:

 

Hot rolled or forged, black surface.
For abundant stock, 15-20 days.For customized products, 30-50 days.

 

Our main products
Platic mould steel:	S50C, P20, P20+Ni, P21, 420
Hot work mould steel:	H13/1.2344, H21/1.2581
Cold work mould steel:	D2, D3, O1/1.2510
Alloy steel:	1.7035, 1.7225, En31, 1.6523
High speed steel:	M2/1.3343, T1/1.3355, M35, M42

 

Product products:

 

 

 

Hot sale products for plastic mould Steel
STANDARD/GRADE				Steel Plate Size(mm)			Round bar Size(mm)		Technics
DIN	AISM	JIS	GB(China)	Thickness	Width	Length	Diameter	Length
1.1210	SAE1050	S50C	50#	10-1000	155-2200	3000-6000	10-350	3000-6000	Hot Rolled
1.1191	SAE1045	S45C	45#	10-700	155-2200	3000-6000	10-300	3000-6000
1.2311	P20	PDS-3	3Cr2Mo	12-800	155-2200	2000-6000	20-200	2000-6000	Forged, Hot Rolled
1.2738	P20+Ni	-	3Cr2NiMnMo	21-1000	155-2200	2000-6000	20-200	2000-6000
1.2083	420	-	4Cr13	12-500	155-1200	2000-6000	12-300	3000-6000

 

Hot sale products for hot / cold work mould Steel
STANDARD/GRADE				Steel Plate Size(mm)			Round bar Size(mm)		Technics
DIN	AISM	JIS	GB(China)	Thickness	Width	Length	Diameter	Length
1.2344	H13	SKD61	4Cr5MoSiV1	16-500	155-500	2000-6000	16-200	3000-6000	Forged, Hot Rolled
1.2379	D2	SKD10	SKD10	6-200	155-810	2000-6000	10-180	3000-6000
1.2080	D3	SKD1	3Cr2Mo	10-200	155-810	2000-6000	10-180	3000-6000
1.2510	O1	SKS3	9CrWMn	10-200	155-810	2000-6000	20-200	3000-6000