Page 347 - 4300 Catalog Cover.pdf

Parker Hannifin Corporation

Tube Fittings Division

Columbus, Ohio

http://www.parker.com/tfd

R3

Metric Tube

4300 Catalog

Temperature Material

-60° up to

+20° C 50° C 100° C 200° C 300° C 400° C

Pressure

reductions in %

1.45

— 4.5 11 20 29 33

Parker

Series

Material

Tensile

Strength

Yield

Strength

%

Elongation

Condition

R

Series

Steel, fine grain

quality (RR) St 37.4

per DIN 1630

340 N/mm

2

min.

49,000 PSI

235 N/mm

2

min.

34,000 PSI

25% min.

Seamless, cold drawn under inert

gas, normal annealed, abbreviation

NBK DIN 2391C, Part 2

R-71

Series

1.4571

X6CrNiMoTi17122

500 N/mm

2

min.

72,500 PSI

245 N/mm

2

min.

35,500 PSI

35% min.

Seamless, cold drawn free of scale,

heat treated in accordance with DIN

17458 tab. 6

Introduction

Parker offers three types of seamless metric tubes for hydraulic,

pneumatic and instrumentation applications:

• Steel seamless cold drawn tube, phosphate and oil

dipped for corrosion resistance

• Steel seamless cold drawn tube, zinc Chromium-6 free

plating for corrosion resistance

• Stainless steel cold drawn tube

Conformance and Material Specifications

Tests and Certificates

All tubes are subjected toa non-destructive leak test andmarked

accordingly. This marking is used in lieu of a works certificate

DIN 50 049-2-2. Test Class 1 DIN 17458 Table 7 applies for

tubes made of 1.4571 material.

Materials and Mechanical Properties

Steel Types, mechanical properties and conditions are listed

i

n

Table R1

.

Welding Suitability and Weldability:

• Steel tubes of St. 37.4, R Series, are weldable according

to usual techniques.

• Not recommended to weld St. 37.4, R-VZ series,

Zinc Chromium-6 Free plated tubes.

Stainless steel tubes of 1.4571 are suitable for arc welding.

The welding filler should be selected in accordance with DIN

8556 part 1 taking into account the type of application and the

welding technique.

Assembly and Installation

Please refer t

o

Section T

f

or the assembly and installation in-

structions for Metric Tube fittings.

Table R1 — Parker Steel tubes mechanical properties and conditions

Note:

Interpolation is acceptable for intermediate temperautre level.

Table R2 — Parker stainless tube elevated temperature derating factors

Applications

Recommended Bend Radius

Abend radius of 3 times the tubeO.D.or greater is recommended

for cold bending of Parker tubes with hand, mechanical and

power bending equipment.

Use of Tube Supports

The use of VH tube supports for EO and EO-2 fittings is required

in certain thinner wall tubes to ensure proper assembly. Consult

the tube charts.

Temperature Range

• Parker steel (St. 37.4) metric seamless tube can be used

at the full rated working pressures without pressure rat-

ing reductions within the following temperature range:

-40°C to +120°C. Maximum allowable operating tempera-

ture of +250°C.

• Parker stainless steel (1.4571) metric seamless tube can

be used at full rated working pressures with-out pres-

sure reductions within the following temperature ranges:

-200°C to 350°C (-60 to +20). Maximum allowable

operating temperature of +400°C. Elevated temperature

pressure reductions are as listed i

n

Table R2.

As Delivered Conditions:

Standard Tube Lengths: 6 meters (approx. 20 ft)

Surface Finish:

• Steel (St. 37.4): Phosphated and oiled

• I.D. dimensions 1.5 – 5 mm, outside and inside oiled

• I.D. dimensions 6 mm and higher, outside and inside

phosphated and oiled

• Steel (St. 37.4) R-VZ Series: Zinc Chromium-6 Free