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Polished Round Hot Rolled Steel Bar ASTM 4135 / EN 34CrMo4 1.7220 Grade

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Contact name:Eric

SHANGHAI UNITE STEEL

Polished Round Hot Rolled Steel Bar ASTM 4135 / EN 34CrMo4 1.7220 Grade

Country/Region	china
City & Province	shanghai shanghai

Product Details

INTRODUCTION

Alloy steel 4135 is a low-alloy steel containing chromium and molybdenum as strengtheners. The alloy is capable of being heat treated to good strength levels while maintaining reasonable toughness.

APPLICATIONS

This alloy finds applications in the aerospace, oil and gas, auto and defense industries. It is used in the production of forged shafts, spindles, fixtures, jigs and collars.

SUPPLY RANGE OF ALLOY 4135

-Dimension: Diameter 4-1600 mm, any length below 16 meters

-Delivery Conditions:

Cold drawn: 4-100 mm

Peeled: 30-160 mm

Grinded: 4- 600 mm

Turned: 130-1200 mm

Hot rolled: 12-320 mm

Hot forged: 130-1600 mm

-EAF+(ESR) or EAF+LF+VD+(ESR)

-HOT rolled; Cold rolled; Forged; Cold Drawn

-Heat Treatment: Untreated, Annealing, N+T, Q+T

-Smelting: EAF+LF+VD (+ESR)

-Surface Finish: Black, Rough Machined, Peeled, Turned or upon request

-UT 100% passed

-Cutting service provided

-Third Party inspection is acceptable (SGS, BV etc.)

AISI 4135 Steel Specification and Relevant Standards

Country	USA	German	Japan	China	Australia
Standard	ASTM A29	DIN 17200	JIS G4105	GB/T 3077	AS 1444
Grades	4135	1.7220/ 34CrMo4	SCM435	35CrMo	4135

ASTM 4135 Steels And Equilvalents Chemical Composition

Standard	Grade	C	Mn	P	S	Si	Cr	Mo
ASTM A29	4135	0.33-0.38	0.70-0.90	0.035	0.040	0.15-0.35	0.80-1.10	0.15-0.25
EN 10250	34CrMo4/ 1.7220	0.30-0.37	0.60-0.90	0.025	0.035	0.40max	0.90-1.20	0.15-0.30
JIS G4105	SCM435	0.33-0.38	0.60-0.90	0.030	0.030	0.15-0.35	0.90-1.20	0.15-0.30

AISI Alloy 4135 Steel Mechanical Properties

Properties	Metric	Imperial
Bulk modulus (typical for steel)	140 GPa	20300 ksi
Shear modulus (typical for steel)	80 GPa	11600 ksi
Elastic modulus	190-210 GPa	27557-30458 ksi
Poisson’s ratio	0.27-0.30	0.27-0.30
Hardness, Brinell (annealed and conld drawn)	187-229	187-229
Hardness, Knoop (converted from Brinell hardness)	230	230
Hardness, Rockwell B (converted from Brinell hardness)	94	94
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only)	15	15
Hardness, Vickers (converted from Brinell hardness)	218	218
Machinability (based on AISI 1212 as 100 machinability)	70	70

PROCESSING

FORGING

AISI 4135 grade alloy steel is forged at a temperature of around 2200ºF (1205ºC) and could be forged down to a temperature of approximately 1700ºF (925ºC). The alloy may be slow cooled after forging or transferred to a furnace held at what may be the finish forging temperature. Such a treatment would in fact amount to a type of annealing treatment.

HEAT TREATMENT

Annealing:For optimum machinability, this grade of steel should be annealed to give a microstructure of coarse pearlite with a minimum of ferrite. From an austenitizing temperature of 1575ºF (855ºC) the steel is cooled to 1400ºF (760ºC) then to 1230ºF (665ºC) at 35ºF (19ºC) per hour, or to 1250ºF (675ºC) and holding for 4 hours, for an iso-anneal. In both cases the final step is an air cool.

NORMALIZING

This steel is normalized at 1600ºF (870ºC) followed by air cooling.

HARDENING

The steel will be austenitized at 1550 – 1600ºF (845 – 870ºC) followed by water or oil quenching, depending upon size and intricacy of section.

TEMPERING

The steel will be tempered at temperatures to meet required mechanical properties, based on past experience.

MACHINABILITY

This grade is readily machinable following correct and appropriate heat treatment.

WELDABILITY

The steel may be welded by normal fusion methods, but only in the annealed or normalized conditions. The steel should not be welded following harden and temper operations. Pre-heat and post-heat may be required, as per past experience.

What we can offer?

-We offer a wide range of steel products in a wide variety of dimensions and executions, according to the common international specifications or customize.

-Machining and heat treatment are available.

-Also, we advise you in choosing the right materials.

Shape Available

Solid round bar
Flat bar
Square bar
Hexagon bar
Block
Plate
Sheet
Wire rod
Strip

Our Advantages

High mechanical property and quenching, enable the surface share equal hardness after deal with it
Good polishing and low roughness
Making the heat-treatment to harden condition before using it
Competitive price
Fast production lead-time
All the material are inspected with 3 times to meet the highly standards
Pure steel quality & stable quality to be guarantee

OUR MAIN PRODUCTS ARE LISTED AS BELOW

Notes:

Available Size:
-Round: Dia. 4 -1600 mm
-Flat: T. 10-120 mm x W. 60-810 mm
-Block: T. 80-1200 mm x W. 100-1600 mm

PAYMENT AND SHIPPING

1. Both T/T and L/C will be acceptable

2. Trade Terms: FOB, CIF, CFR

3. The delivery will be in 10-15 days if have stock; For customized items, the delivery will be negotiated by both parties

4. Shipping by sea freight from Shanghai Port (PRC) for Bulk orders, by airfreight or express for samples

COMPANY INFORMATION

Shanghai Unite Steel Trading Co., Ltd

We are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.

In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china.

What’s more, we have built long, deep and close business relationship with dozens of steel company, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!

FAQ

Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price.

Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.

Q: Delivery time?
A: We have ready stock for most of material grades in our warehouse. If the material doesn't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.

Q: What is the payment term?
A: T/T or L/C.

Q: Can we visit your company and factory?
A: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come.