AISI 4130 75K P+X Alloy Steel Round Bar

• Customization: Available
• Type: Alloy Steel Bar
• Standard: AISI
• Model NO.: 4130 75K P+X
• Technique: Forged
• Shape: Bar
• Transport Package: Strip
• Specification: 4-60MM
• Trademark: SHUNFU
• Origin: China
• Production Capacity: 50000tons/Year

Product Description

AISI 4130 75K P+X Alloy Steel

 

Introduce

AISI 4130 75K, PSL 3, API 6A Standards, Temperature Class P+X, NACE MR0175:2015
 

Chemical Composition

Grade	C	Mn	Cr	Mo	Si	P	S	Ni	Cu	V	H max. ppm
Min.	0.280	0.400	0.800	0.150	0.150	-	-	-	-	-	-
Max.	0.330	0.600	1.100	0.250	0.350	0.025	0.025	0.350	0.350	0.300	2.000

 

Heat Treatment

Normalizing temperature	Time	Austenizing temperature	Time	Tempering temperature	Time
Min. 1620ºF (899ºC)	Min. 60 minutes	1575 - 1625ºF (857 - 885ºC)	Min. 60 minutes	Min. 1238ºF (670ºC)	Min. 60 minutes

Oil or Polymer or Water. For Water Quenching, the temperature of water shall not exceed 38ºC (100ºF) at start of quench. For bath-type quenching, the temperature of water shall not exceed 49ºC(120ºF) at any time during the quench cycle.

Mechanical Properties

as per ASTM E21-20 for P+X Grade

Yield strength minimum (0.2%)	Tensile strength minimum	Elongation in 2" (minimum)	Reduction Area  (minimum)
75 ksi (517MPa)	95 ksi (655 MPa)	18%	35%

 

Quality Inspection

1. Specimen test location & QTC
2. Charpy V-notch impact at 21ºC / -32ºC
3. Hardness as per ASTM E10-18: On surface / 1" below surface
4. Volumetric NDE 100% - Ultrasonic
5. Minimum hot work reduction ratio 4.0 to 1
6. Grain size should be #S or Finer as per ASTM E112 - 13
7. Surface inspection