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AISI 420 FM

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PRÄZI Flat steel

Thickness Tolerances: Thickness +0,25/0 mm, Width +0,40/0 mm, Length +20/0 mm Prices in € per piece (valid only for the German market)
Width
(mm)
8,4 10,4 15,4 20,4 25,4 30,4 40,4 50,4 60,4 80,4
20,4 26 32 42              
25,4 29 36 44 59            
30,4 31 38 52 69 73          
40,4 35 44 60 81 87 104        
50,4 38 49 68 87 99 114 138      
60,4 46 56 82 101 114 133 156 198    
80,4 57 70 95 117 141 165 189 237 270  
100,4 68 83 120 147 168 198 228 282 318 357
125,4 81 101 150 174 204 234 252 318 363 414
150,4 94 116 178 213 234 297 330 423 468 499
200,4 124 143 235 260 309 382 438 492 564 618
250,4 146 167 290 298 378 438 492 558 660 732
300,4 167 198 338 369 450 510 565 636 756 842

PRÄZI square bar

with machining allowance 500 mm
Thickness
Length (mm) 20,4 25,4 30,4 40,4 50,4 60,4 80,4
500 57 73 78 121 171 250 297
Tolerances for cross section +0,25/0 mm
Thickness Tolerances: Thickness +0,25/0 mm, Width +0,40/0 mm, Length +20/-20 mm Prices in € per piece (valid only for the German market)
Width
(mm)
8,4 10,4 15,4 20,4 25,4 30,4 40,4 50,4 60,4 80,4
20,4 42 53 70              
25,4 47 59 73 97            
30,4 51 62 86 114 122          
40,4 57 72 99 135 145 172        
50,4 62 80 112 145 165 190 230      
60,4 76 92 136 166 190 220 260 330    
80,4 95 116 158 195 235 275 315 395 450  
100,4 112 138 198 245 280 330 380 470 530 595
125,4 135 168 250 290 340 390 420 530 605 690
150,4 156 193 295 355 390 495 550 705 780 832
200,4 206 238 390 433 515 635 730 820 940 1030
250,4 242 277 480 498 630 730 820 930 1100 1220
300,4 278 329 560 615 750 850 940 1060 1260 1404

PRÄZI square bar

with machining allowance 1030 mm
Thickness
Length (mm) 20,4 25,4 30,4 40,4 50,4 60,4 80,4
1030 95 122 130 202 285 415 495
Tolerances for cross section +0,25/0 mm

AISI 420 FM Data sheet download

Tempered and hardened steel More Information

Technical delivery terms PRÄZI Flachstahl

( Dimensions in mm )

Range of application:
These specifications apply for fine-machinedbars in the followngi ranges of application:

  • from 10 to 500 mm width for flat steel dimensions
  • from 1 to 100 mm thickness for flat steel dimensions
  • 500, 1000 and 1030 mm length for flat steel dimensions
  • from 4 to 150 mm side length for square steel dimensions.
  • It does not apply to:
  • bright flat steel according to DIN EN 10278
  • bright squares according to DIN EN 10278
  • cold-rolled steel strip according to DIN EN 10140

Concept
Precision flat steel and square steel are sharp-edged bars with fine
machined longitudinal surfaces free of decarburisation.

Designation
The following are to be indicated in the designation in the seuqence given below:

  • Name (PRÄZI Flachstahl)
  • Delivery conditions (DIN 59350,mit Bearbeitungsaufmaß)
  • Abbreviation or material number
  • Nominal sizes (flat steel: width, thickness, length; square steel: thickness, length)

Example:

PRÄZI Flachstahl DIN 59350
1.2842 150 x 30 x 100 mm

PRÄZI Flachstahl mit Bearbeitungsaufmaß
1.2436 Vkt. 20,4 x 1030 mm

Dimensions, permissible dimensional deviations and deviations of form
The permissible deviations from the nominal sizes are as follows:

For PRÄZI- flat steel according to DIN 59 350

Thickness grounded / fine-machined Tol.: +0,05 / - 0 mm
Width grounded / fine-machined Tol.: +0,2 / - 0 mm

Length, one fine-machined end face,
one rough-machined end face

Tol.: +5 mm
 Square steel dimensions, thickness Tol.: +0,05 / - 0 mm

 

For PRÄZI- flat steel according to DIN 59 350 with machining allowance:

Thickness grounded / fine-machined Tol.: +0,2 / - 0 mm
Width grounded / fine-machined Tol.: +0,2 / - 0 mm

Length, one fine-machined end face,
one rough-machined end face

Tol.: +5 mm
Square steel dimensions , thicknessTol.: +0,20 / - 0 mm

 

Angular deviation for PRÄZI- flat steel according to DIN 59350
The permissible angular deviation between the side faces and between
the end faces and these faces 0°15´.

For PRÄZI flat steel with machining allowance:

Thickness grounded / fine-machined Tol.: + 0,25 / - 0 mm
Width grounded / fine-machined Tol.: + 0,4 / - 0 mm

Length fine-machined / sawn length 500 mm

Tol.: + 20 mm
Length fine-machined / sawn length 1030 mm Tol.: +/- 20 mm
Square steel dimensions , thickness Tol.: + 0,25 / - 0 mm

 

Angular deviation
The permissible angular deviation between the side faces is 0°15´.

Parallelism
The parallelism lies within the permissible dimensional tolerances. Deviations
therefrom are to be agreed when ordering.

Surface roughness
The figures for the peak-to-valley height relate in the case of

  • precision flat steel to the wide longitudinal sides
  • precision square steel bars to all longitudinal sides

It is for

  • bars without machining allowance     Ra ≤ 2 μm
  • bars with machining allowance           Ra ≤ 6 μm
  • bars with machining over-measure    Ra ≤ 6 μm

Heat treatment condition
The steels are normally delivered in a soft-annealed condition, other
heat treatment conditions are to be agreed when ordering.

Planeness and straightness
The deviation from the planeness and straightness are indicated in
the table below. They are measured on an individual piece along the
longitudinal and short sides with a feeler gauge. The test specimen is
to lie freely on a plane board.

Width (mm) thickness ( mm )
  >1 ≤2,2 >2,2 ≤5,2 >5,2 ≤10,4 >10,4 ≤20,4 >20,4
≤ 100,3 (1,0) 0,8 0,7 0,5 0,3
>100,3 ≤200,3 (1,5) 1,1 0,8 0,6 0,4
>200,3 ≤300,3 (2,0) 1,5 0,9 0,8 0,5
 >300,3 ≤500,3 (2,3)  2,0 1,2 1,0 0,8

For the small thicknesses, changes in planeness are possible.
Figures in brackets are only approximate values.

Delivery terms

Terms of delivery
Export

All prices are quoted in Euro per unit,
ex works, excluding packaging, plus alloy
surcharges
. Valid
from 01.05.15.

Minimum order quantity:
There are no minimum order quantities.
From an order value higher than
250 Euros, delivery is effected free german
border including packaging (CPT,
German Border, ICC-Incoterms 2010).

Shipping:
Consignments of goods up to 40
kg are delivered via parcel service.
Consignments of goods above 40
kg are delivered by a forwarding
agent. The receiver has to bear all
the risks during the transport.

Shipping costs:
Parcel shipment is effected at cost
price. Consignments that can be separated
are split up into several parcels
to your advantage. Shipped parts with
a weight of more than 40 kg are delivered
by a freight forwarder (Freight
charges available on request).

Scale of prices:

Order value Quantity discount
 
0 to 250 Euro Order value   plus freight charges
and packaging
 
   > 250 Euro Order value   free German border
 
   > 2000 Euro Order value   less 4 %
 
   > 4000 Euro Order value   less 6 %
 
   > 6000 Euro Order value   less 8 %
 
   > 8000 Euro Order value   less 10 %

 

Delivery time:
All standard PRÄZI-flat steels are available
at the day of order. Orders, we receive
by 13:00 hrs, are shipped on the
same day.

Our currently valid alloy surcharges are stored here

The general business terms and conditions from PRÄZI–Flachstahl AG are stored here.

Alloy surcharges for PRÄZI flat steel deliveries

Alloy surcharges for PRÄZI flat steel deliveries valid as of

ab 01. Juli 2017

Material Euro/kg
AISI 420 FM 1,36 €/kg
AISI 5120 0,38 €/kg
AISI P 20 0,51 €/kg
AISI P 20 + S 0,51 €/kg
AISI H 11 1,42 €/kg
AISI A 2 1,17 €/kg
AISI D 2 1,84 €/kg
AISI D 6 1,31 €/kg
AISI 6F 7 1,08 €/kg
AISI 02 0,38 €/kg
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