Category: ‘EN’
The purchasers and clients in Germany and Austria usually provided us the standard of DIN EN 1561. This is the old standard, and has been replaced by the new standard DIN 1691. However, we should know how to transfer these two st... Read More...
Derived units are algebraic combinations of the seven base units and the two supplementary units with some of the combinations being assigned special names and symbols.
Quantity
Description
Symbol
Expression in terms ... Read More...
Derived units are algebraic combinations of the seven base units and the two supplementary units with some of the combinations being assigned special names and symbols.
Quantity
Name of Unit
Symbol
Expression in t... Read More...
The core of the SI system is a short list of base units defined in an absolute way without referring to any other units. The base units are consistent with the part of the metric system called the MKS system. The International Sy... Read More...
The SI system (International System of Units) is the modern metric system of measurement and the dominant system of international commerce and trade. SI units are gradually replacing Imperial and USCS units.
The SI is maintaine... Read More...
In the SI system the mass unit is the kg and since the weight is a force - the weight unit is the Newton (N). Equation (2) for a body with 1 kg mass can be expressed as:
w = (1 kg) (9.807 m/s2)
= 9.807 (N) (2b)
wher... Read More...
The British Gravitational System (Imperial System) of units is used by engineers in the English-speaking world with the same relation to the foot - pound - second system as the meter kilogram - force second system (SI) has to the... Read More...
In the English Engineering system of units the primary dimensions are are force, mass, length, time and temperature. The units for force and mass are defined independently
the basic unit of mass is pound-mass (lbm)
the un... Read More...
The EN standards for stainless steel are quite complex and it is sometimes hard to know which standards you need to know about in order to fulfil all the requirements of an order. This article is an attempt to simplify the path t... Read More...
BS EN ISO 4957:2000...Tool steels
BS EN ISO 683-17:1999...Heat-treated steels, alloy steels and free-cutting steels. Ball and roller bearing steels
BS EN ISO 15156-2:2003..Petroleum and natural gas industries. Materials for u... Read More...